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Designs for Health · Ingredient Science
The Science
Behind the Formula
Every ingredient we select is chosen for clinical relevance, bioavailability, and evidence of efficacy. Explore the mechanisms, health applications, and practitioner guidance behind 116 core ingredients — formulated for healthcare professionals and their patients.
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The direct serotonin precursor — 5-HTP crosses the blood-brain barrier to promote serotonin synthesis, which helps support mood regulation, normal appetite, and sleep support.
Mechanism of Action
5-Hydroxytryptophan (5-HTP), extracted from Griffonia simplicifolia seeds, is the direct metabolic precursor to serotonin — bypassing the rate-limiting tryptophan hydroxylase conversion step. 5-HTP readily crosses the blood-brain barrier where aromatic L-amino acid decarboxylase (with P5P cofactor) converts it to serotonin. CNS serotonin is subsequently converted to N-acetylserotonin and melatonin by the pineal gland, linking 5-HTP supplementation to both mood health and circadian sleep-wake cycle support.
Health Benefits*
- Promotes CNS serotonin synthesis — supports mood and emotional regulation
- Promotes normal sleep quality via melatonin synthesis
- Supports normal appetite and carbohydrate cravings through peripheral serotonin signaling
- Supports emotional eating control and healthy body weight management
Dosing Reference
FAQ
- Can 5-HTP be combined with antidepressants?
- Never combine 5-HTP with SSRIs, SNRIs, MAOIs, or other serotonergic drugs — the risk of serotonin syndrome (potentially life-threatening: agitation, hyperthermia, tachycardia, myoclonus) is real and serious. Always screen for serotonergic medications before recommending 5-HTP.
Practitioner Notes
Absolute contraindication with SSRIs, MAOIs, tricyclic antidepressants, triptans, tramadol, and dextromethorphan. Start at 50mg and titrate slowly — GI nausea is serving-limiting (peripheral serotonin). P5P (active B6) is the cofactor for aromatic amino acid decarboxylase — ensure adequate B6 status or supplement alongside 5-HTP. Use carbidopa consideration at high servings to reduce peripheral GI serotonin conversion. Do not use in bipolar disorder - may trigger mania.
DFH Products Featuring 5-HTP
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A mitochondrial fuel shuttle with nootropic properties — ALC supports brain energy metabolism, acetylcholine synthesis, and is supportive for aging neural tissue.
Mechanism of Action
Acetyl-L-carnitine (ALC) crosses the blood-brain barrier more readily than free L-carnitine, where it serves dual functions. The acetyl group donated by ALC is a direct substrate for acetylcholine synthesis — the primary neurotransmitter of memory consolidation and focus. Simultaneously, ALC facilitates mitochondrial fatty acid transport and beta-oxidation in neurons, maintaining mitochondrial membrane potential that declines with aging. It also acts as an antioxidant against oxidative stress in neural tissue, may upregulate nerve growth factor (NGF) receptor expression.
Health Benefits*
- Promotes cognitive processing speed and memory consolidation via acetylcholine support
- Helps protect neurons from oxidative damage and mitochondrial dysfunction
- Supports mitochondrial energy metabolism in the aging brain
- Helps promote healthy moods and energy levels
Dosing Reference
Practitioner Notes
ALC may mildly increase appetite in some individuals. Combine with alpha-lipoic acid and CoQ10 for comprehensive mitochondrial support. Can be mildly stimulating — avoid taking in the evening. Well-tolerated in clinical populations with few significant drug interactions.
DFH Products Featuring Acetyl L-Carnitine
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Physical adsorbents that help capture and remove toxins, mycotoxins, and endotoxins from the GI tract.
Mechanism of Action
Activated charcoal operates through physical adsorption, possessing a highly porous surface structure with a massive surface area relative to its mass. This carbon-based substrate forms weak van der Waals interactions with lipophilic toxins, mycotoxins (aflatoxins, ochratoxin), bacterial lipopolysaccharides (endotoxins), and other xenobiotic compounds within the intestinal lumen. Unlike systemic detoxification pathways, charcoal's mechanism is non-systemic and confined to the GI tract, making it particularly useful in contexts of acute toxin exposure, mold-related illness, or dysbiosis-driven endotoxemia. The compound is not absorbed and is eliminated in feces.
Health Benefits*
- Helps with mycotoxin and aflatoxin burden in the GI tract
- Binds lipopolysaccharides (LPS)
- Supports normal recovery from acute toxic exposures
- Helps restore microbial balance
- Non-systemic mechanism allows long-term use without nutrient depletion
Dosing Reference
Practitioner Notes
Administer charcoal at least 2 hours away from medications and supplements to prevent interaction and reduced bioavailability. Monitor for constipation, which is the most common side effect; adequate hydration and soluble fiber support are recommended. Avoid long-term daily use (>3 months continuous) in patients with compromised gut integrity, as repetitive adsorption may interfere with nutrient absorption. Do not use in cases of acute GI obstruction or ileus.
DFH Products Featuring Activated Charcoal
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Botanical HPA axis regulators — adaptogens help support normal cortisol secretion patterns, buffer the neuroendocrine stress response, and help restore vitality in adrenal fatigue states.
Mechanism of Action
Adaptogenic herbs (Ashwagandha, Rhodiola rosea, Panax ginseng, Siberian ginseng/Eleuthero, Schisandra) act on the hypothalamic-pituitary-adrenal (HPA) axis and sympathoadrenal system to support normal cortisol secretion — blunting an excessive cortisol response to stress while supporting appropriate output in states of adrenal exhaustion. Mechanistically, they help modulate glucocorticoid receptor sensitivity, upregulate heat shock proteins (Hsp70) that protect against cellular stress damage, modulate NPY (neuropeptide Y) and nitric oxide pathways, and reduce oxidative stress in adrenal tissue.
Health Benefits*
- Promotes normal cortisol patterns, avoiding both excessive and insufficient output
- Helps reduce perceived stress, occasional anxiety, and stress-induced fatigue
- Supports adrenal tissue health during occasional stress and HPA dysregulation
- Supports mental and physical endurance under high-demand conditions
- May support thyroid function — some adaptogens may have mild stimulatory effects on thyroid hormone output
Dosing Reference
Practitioner Notes
Ashwagandha and some adaptogens are mildly thyroid-promoting — monitor thyroid function in patients with Hashimoto's or on thyroid medications. Avoid in pregnancy — most adaptogens are contraindicated (particularly ashwagandha, which has uterotonic properties). Some adaptogens (Siberian ginseng) interact with digoxin assays. Adrenal cortisol testing (4-point salivary cortisol curve) is the gold standard for assessing HPA dysfunction and guiding adaptogen selection.
DFH Products Featuring Adaptogens
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Stabilized garlic compounds delivering microbial balance and cardiovascular support.
Mechanism of Action
Allicin is a volatile organosulfur compound generated enzymatically when garlic cloves are disrupted, formed from the substrate alliin via the enzyme alliinase. Once generated or stabilized, allicin and related thiosulfinate compounds penetrate bacterial cell membranes and fungal cell walls through lipophilic interactions, disrupting cellular sulfhydryl groups and inhibiting key enzymes including DNA gyrase and biofilm-associated proteins. Allicin additionally helps modulate immune function through TLR activation and supports vascular endothelial function via S-nitrosylation pathways.
Health Benefits*
- Promotes microbial balance
- Supports healthy lipid profiles
- Promotes endothelial function and healthy blood pressure already within the normal range
- Promotes innate immune response through pattern recognition receptor activation
Dosing Reference
Practitioner Notes
Stabilized allicin is preferred over raw garlic powder to ensure consistent potency and bioavailability. Consider potential potentiation of anticoagulant medications (warfarin, dabigatran) with high-serving supplementation; monitor INR and adjust dosing as indicated. Patients on antiplatelet therapy (aspirin, clopidogrel) may experience additive effects; counsel on signs of increased bleeding. GI upset is rare but may occur at servings >1500mg daily; administer with meals to mitigate.
DFH Products Featuring Allicin (Stabilized Garlic)
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A 200:1 concentrated inner-leaf gel supporting GI mucosal health and intestinal comfort.
Mechanism of Action
Aloe vera's inner gel (parenchyma tissue) contains multiple bioactive polysaccharides, particularly beta-1,4-linked acetylated mannose polymers (acemannan), alongside amino acids and phytonutrients. Aloe's mucilage provides a physical protective barrier over the gastric and intestinal mucosa, reducing HCl and pepsin-induced mucosal irritation. Additionally, aloe polysaccharides help promote fibroblast proliferation and increase hyaluronic acid synthesis, facilitating normal mucosal regeneration.
Health Benefits*
- Restores and maintains healthy intestinal barrier function
- Promotes gastric comfort and supports normal gastric mucosal repair
- Acts as a prebiotic, nourishing beneficial microbiota
- Promotes normal gastrointestinal permeability
- Supports healthy inflammatory tone in the lower GI tract
Dosing Reference
Practitioner Notes
Use inner-gel preparations only; latex (found in the pericyclic layer) is a strong cathartic and is contraindicated in chronic use. The 200:1 concentrated form provides support without the laxative risk of whole-plant preparations. Monitor for mild loose stools during the first 1–2 weeks as dysbiotic byproducts clear; this typically resolves as eubiosis is restored. Caution in pregnancy due to limited safety data; use is not recommended in the first trimester.
DFH Products Featuring Aloe Vera
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A universal antioxidant active in both water and fat environments — ALA regenerates the entire antioxidant network, supports normal insulin function, and serves as a mitochondrial cofactor.
Mechanism of Action
Alpha-lipoic acid (ALA) is a naturally occurring organosulfur compound that serves as an essential cofactor for the pyruvate dehydrogenase and alpha-ketoglutarate dehydrogenase complexes — the gateway enzymes linking glycolysis to the Krebs cycle in mitochondria. As an antioxidant, ALA is uniquely both water- and fat-soluble, scavenging reactive oxygen and nitrogen species in all cellular compartments. It helps regenerate vitamins C, E, CoQ10, and glutathione (extending the antioxidant network). ALA chelates heavy metals (mercury, arsenic, cadmium) and activates Nrf2/ARE pathways, upregulating catalase, glutathione peroxidase, and heme oxygenase-1. The R-form (Na-R-ALA) is the endogenous, physiologically active enantiomer.
Health Benefits*
- Regenerates vitamins C, E, CoQ10, and glutathione — amplifies the antioxidant network
- Activates Nrf2 pathway — upregulates endogenous antioxidant and detox enzyme expression
- Chelates heavy metals — supports mobilization of mercury, arsenic, and cadmium
- Helps support normal insulin function
- Supports mitochondrial energy metabolism as pyruvate dehydrogenase cofactor
Dosing Reference
Practitioner Notes
R-ALA is the physiologically active form — significantly more bioavailable and potent than the racemic mixture (RS-ALA) or S-ALA. Na-R-ALA (sodium R-lipoate salt) is the most stable and bioavailable form — unstabilized R-ALA is hygroscopic and may polymerize. Individuals with diabetes should take with or immediately before carbohydrate-containing meals. Heavy metal chelation mobilizes metals — ensure adequate kidney and liver detox pathway support concurrently. Combine with selenium for Nrf2/GPx synergy.
DFH Products Featuring Alpha Lipoic Acid
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The essential building blocks of muscle, enzyme, and immune proteins — a complete amino acid profile supports anabolism, recovery, and whole-body protein homeostasis.
Mechanism of Action
Essential amino acids (EAAs) — leucine, isoleucine, valine, lysine, methionine, phenylalanine, threonine, tryptophan, and histidine — cannot be synthesized de novo and must be supplied exogenously. Leucine is the primary anabolic signal. Free-form EAAs are absorbed within 20–30 minutes, providing a rapid substrate pool for muscle protein synthesis at moments of elevated demand: post-exercise, post-fasting, and during recovery from illness or surgery.
Health Benefits*
- Helps promote muscle protein synthesis independent of food intake
- Helps preserve lean muscle mass during caloric restriction, physical stress, and aging
- Provides a substrate pool for rapid post-exercise tissue repair
- Maintains positive nitrogen balance during physiological stress states
- Supports immune protein synthesis — antibody, cytokine, and enzyme production
- Free-form absorption is faster than protein food digestion — ideal for acute supplementation
Dosing Reference
Practitioner Notes
Particularly valuable in sarcopenia, post-surgical recovery, patients with impaired protein digestion (hypochlorhydria, EPI), and clinical populations with elevated protein needs. Complete EAA formulas are superior to BCAAs alone — leucine without the other EAAs cannot sustain net muscle protein accretion. Combine with resistance exercise for maximum anabolic response. Consider in elderly patients with "anabolic resistance" who require higher leucine thresholds.
DFH Products Featuring Amino Acids
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The "King of Bitters" — andrographolides promote innate immune health, support upper respiratory tract health, and promotes balanced immune vigilance.
Mechanism of Action
Andrographis paniculata contains diterpene lactones, primarily andrographolide, which supports innate immune function. Andrographolide has been shown to inhibit NF-κB nuclear translocation by preventing p65 subunit phosphorylation, reducing the transcription of pro-inflammatory cytokines including TNF-α, IL-1β, and IL-6. It also activates PPARγ signaling, contributing to normal immune and inflammatory responses.
Health Benefits*
- Supports innate immune responses by promoting macrophage phagocytosis and NK cell activity
- Supports upper respiratory tract health
- Helps modulate NF-κB signaling for balanced inflammatory responses
- Supports healthy mucosal immune responses
Dosing Reference
Practitioner Notes
The bitter taste compounds (andrographolides) help promote digestive secretions. Contraindicated in pregnancy (traditional emmenagogue). Commonly combined with echinacea and elderberry for comprehensive immune support.
DFH Products Featuring Andrographis
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Targeted botanical support for healthy GI microbial balance.
Mechanism of Action
Artemisinin, a sesquiterpene lactone isolated from Artemisia annua (sweet wormwood), supports microbial balance through multiple pathways. The molecule's endoperoxide bridge undergoes reduction in the presence of heme iron, generating free radicals that target bacterial and protozoal cell membranes and DNA. Artemisinin demonstrates selective pressure against certain microorganisms while sparing commensal bacteria, making it valuable in restoring microbial ecology without collateral damage to beneficial taxa.
Health Benefits*
- Restores healthy microbial diversity and eubiotic balance
- Supports GI comfort and normal transit function
- Facilitates colonization by probiotic organisms
Dosing Reference
Practitioner Notes
Artemisinin is most effective when used as part of a comprehensive protocol including prebiotics, probiotics, and dietary modification. Monitor for Herxheimer-like reactions (increased bloating, fatigue) during the first 1–2 weeks; symptom severity typically indicates robust microbial clearance. Contraindicated in pregnancy and lactation due to potential emmenagogue effects and limited safety data. Use cautiously in patients on anticoagulants, as artemisinin may potentiate effects; monitor coagulation markers. Drug interaction potential exists with cytochrome P450 substrates; space administration appropriately.
DFH Products Featuring Artemisinin
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Ayurveda's premier adaptogen — ashwagandha helps balance cortisol, modulate the HPA axis, support thyroid function, and has emerging evidence for supporting muscle recovery.
Mechanism of Action
Withania somnifera (ashwagandha) root extract contains withanolides — steroidal lactones that help modulate the hypothalamic-pituitary-adrenal axis through glucocorticoid receptor binding, helping balance cortisol responses under stress. Simultaneously, withanolides upregulate GABA-A receptor chloride channel opening — providing support for occasional anxiety independent of cortisol. Ashwagandha may also help downregulate pro-inflammatory NF-κB signaling, appears to mildly promote thyroid hormone synthesis (T4 and T3).
Health Benefits*
- May help occasional anxiety
- Helps promote quality, restful sleep
- Supports thyroid health
- Promotes a healthy inflammatory response
Dosing Reference
Practitioner Notes
Monitor thyroid function in patients with Hashimoto's thyroiditis — ashwagandha's thyroid-promoting properties may exacerbate autoimmune thyroid activation. Contraindicated in pregnancy — uterotonic properties documented in traditional use. Potential additive effects with benzodiazepines and sedative medications. Adrenotone combines ashwagandha with Rhodiola for synergistic HPA support.
DFH Products Featuring Ashwagandha
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A keto-carotenoid from microalgae with unique membrane-spanning geometry to promote antioxidant status.
Mechanism of Action
Astaxanthin (3,3'-dihydroxy-β,β-carotene-4,4'-dione) is a xanthophyll carotenoid with a unique molecular geometry: its polar end groups anchor in both the inner and outer leaflets of the lipid bilayer while the polyene chain spans the membrane interior.
Health Benefits*
- Supports health skin texture and elasticity
- Promotes a healthy inflammatory response
- Supports healthy cholesterol metabolism and cardiovascular health
- Supports muscle endurance and helps reduce exercise-induced oxidative damage
Dosing Reference
Practitioner Notes
AstaREAL® (from Haematococcus pluvialis microalgae) is the most clinically studied astaxanthin source with over 60 human trials. Astaxanthin is fat-soluble — must be taken with a meal containing dietary fat for best absorption. Unlike beta-carotene, astaxanthin does not convert to vitamin A and has no pro-oxidant activity. May provide mild anti-platelet activity at higher servings — use caution with anticoagulant therapy. XanthOmega Krill Oil provides 12mg AstaREAL® alongside phospholipid-bound omega-3s.
DFH Products Featuring Astaxanthin
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The metabolic engine crew — activated B vitamins power mitochondrial energy production, methylation, neurotransmitter synthesis, and DNA integrity.
Mechanism of Action
B vitamins serve as essential cofactors across three critical metabolic domains. In energy metabolism, B1 (thiamine), B2 (riboflavin), B3 (niacin), and B5 (pantothenic acid) function as coenzymes in the Krebs cycle and electron transport chain — each indispensable for mitochondrial ATP generation. In one-carbon metabolism and methylation, folate (5-MTHF), B12 (methylcobalamin), and B6 (P5P) drive the methylation cycle, synthesizing SAMe and controlling homocysteine levels. In neurotransmitter biosynthesis, P5P serves as the essential cofactor for aromatic amino acid decarboxylases producing serotonin, dopamine, norepinephrine, and GABA.
Health Benefits*
- Supports cellular energy production — deficiency causes fatigue and mitochondrial dysfunction
- Drives methylation cycle: controls homocysteine, supports SAMe synthesis for mood and detox
- Provides cofactors for serotonin, dopamine, and GABA neurotransmitter synthesis
- Supports cognitive function, memory, and nerve myelin sheath integrity (B12)
- Essential for red blood cell maturation and prevention of megaloblastic anemia
Dosing Reference
FAQ
- Why do methylated forms matter?
- Approximately 40% of the population carries MTHFR gene variants that impair conversion of folic acid to active 5-MTHF. Similarly, cyanocobalamin (synthetic B12) requires enzymatic conversion cyanocobalamin → methylcobalamin. Methylated forms bypass these conversion steps entirely, ensuring efficacy regardless of genetic status.
Practitioner Notes
Monitor homocysteine as a functional biomarker of B-vitamin methylation status — target below 7 µmol/L. High-concentration isolated B6 supplementation (above 200mg/day for extended periods) has been associated with peripheral sensory neuropathy — use P5P form and avoid excessive amounts. In pernicious anemia or post-gastrectomy, sublingual or injectable B12 may be required to bypass intrinsic factor dependence.
DFH Products Featuring B Vitamins
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A potent isoquinoline alkaloid with broad microbiome-balancing properties — berberine targets the GI tract by supporting intestinal motility and metabolic health.
Mechanism of Action
Berberine is an isoquinoline alkaloid found in goldenseal, barberry, and Oregon grape root that intercalates into bacterial DNA, disrupting replication and inhibiting cell division across a broad spectrum of microorganisms. In the GI tract, it helps modulate microbial composition — reducing overgrowth and supporting beneficial Akkermansia populations. Berberine also helps support gut motility, glucose metabolism, and mucosal bile acid handling.
Health Benefits*
- Helps with occasional bloating, gas, and altered bowel habits
- Modulates gut microbiome — supports Akkermansia muciniphila (gut barrier health)
- Promotes gut motility and metabolic signaling
Dosing Reference
Practitioner Notes
GI cramping and loose stool are common at initiation — start at lower amounts and titrate. Berberine is a potent CYP3A4, CYP2D6, and P-glycoprotein inhibitor — screen for interactions with statins, immunosuppressants, antiarrhythmics, and calcium channel blockers. Not appropriate for use in pregnancy. Do not use for continuous periods exceeding 8–12 weeks without reassessment — extended use may reduce beneficial bacteria. GI Microb-X combines berberine with other botanicals for comprehensive GI protocols.
DFH Products Featuring Berberine
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Traditionally used botanical that helps support healthy blood sugar metabolism, normal insulin function, and healthy weight management.
Mechanism of Action
Berberine helps activate AMPK (AMP-activated protein kinase) — the master cellular energy sensor — by inhibiting Complex I of the mitochondrial electron transport chain, transiently increasing the AMP:ATP ratio. Berberine may also help reduce PCSK9 expression — supporting healthy lipid metabolism.
Health Benefits*
- Supports healthy blood glucose metabolism
- Supports healthy lipid and triglyceride metabolism
- Supports liver and cardiovascular health
Dosing Reference
Practitioner Notes
Significant CYP3A4, CYP2D6, and P-glycoprotein inhibitor — screen for interactions with statins, immunosuppressants, calcium channel blockers, and antiarrhythmics. Monitor blood glucose when combining with diabetes medications — may cause hypoglycemia. Not appropriate in pregnancy. Consider Metabolic Synergy for a comprehensive formula combining berberine with chromium, alpha-lipoic acid, and other nutrients.
DFH Products Featuring Berberine (Metabolic)
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A citrus polyphenol to support healthy lipid metabolism.
Mechanism of Action
Bergamot flavonoids—particularly neoeriocitrin and brutieridin—competitively inhibit HMG-CoA reductase, the rate-limiting enzyme in cholesterol biosynthesis.
Health Benefits*
- Promotes healthy lipid and triglyceride metabolism
- Supports endothelial function and arterial elasticity through NO bioavailability enhancement
- Helps support glucose metabolism and insulin function independent of lipid effects
Dosing Reference
FAQ
- Can bergamot replace a statin?
- No, bergamot is a complementary tool for mild lipid support, but cannot replace statins. Combination approaches may be clinically appropriate in select patients.
- Does bergamot interact with CoQ10 depletion?
- Unlike statins, bergamot does not significantly impair CoQ10 synthesis. However, concurrent statin use may warrant separate CoQ10 supplementation (100–200 mg daily) for mitochondrial support.
Practitioner Notes
No direct CYP3A4 inhibition; minimal statin interaction risk. However, potential additive effects on cholesterol warrant lipid panel reassessment in statin-treated patients. Avoid in patients with CYP2D6 deficiency (poor metabolizers). Monitor BP in hypertensive patients. Pregnancy/lactation safety data limited; consider alternatives. Rare photosensitivity with some bergamot oils (use standardized extract only).
DFH Products Featuring Bergamot Extract
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Targeted bioactive peptides engineered for muscle recovery, performance, and normal tissue repair.
Mechanism of Action
Bioactive peptides are short-chain amino acid sequences (2–20 residues) derived from enzymatic hydrolysis of muscle, collagen, and whey proteins, selected for their bioavailability and functional properties. These peptides cross the intestinal epithelium intact through specific transporter-mediated mechanisms, reaching systemic circulation at physiologically relevant concentrations. Additionally, collagen-derived peptides (collagen I and III fragments) provide substrate for cross-linked collagen deposition in muscle, tendon, and cartilage via fibroblast signaling.
Health Benefits*
- Promotes muscle protein synthesis and lean muscle gain
- Accelerates post-exercise recovery and helps reduce muscle soreness
- Supports collagen remodeling in tendons and ligaments
- Supports joint cartilage integrity and shock-absorption capacity
- Helps maintain muscle mass during caloric restriction or aging
Dosing Reference
Practitioner Notes
Peptide efficacy is dependent on molecular weight, amino acid composition, and source material; peptides sourced from grass-fed bovine collagen and whey demonstrate superior bioavailability. Combine with adequate total protein intake (1.6–2.2g/kg body weight) and resistance training for maximum efficacy. Monitor renal function in patients with existing kidney compromise, as high-serving peptide supplementation increases nitrogenous waste load. Time administration with meals or carbohydrate-containing beverages to enhance intestinal absorption and insulin response.
DFH Products Featuring Bioactive Peptides
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A B-vitamin essential for keratin biosynthesis — biotin supports hair growth, nail strength, skin integrity, and fatty acid and glucose metabolism at the cellular level.
Mechanism of Action
Biotin (vitamin B7) is the obligate cofactor for five carboxylase enzymes: acetyl-CoA carboxylase (fatty acid synthesis initiation), pyruvate carboxylase (gluconeogenesis), propionyl-CoA carboxylase (branched-chain amino acid catabolism), 3-methylcrotonyl-CoA carboxylase (leucine catabolism), and methylmalonyl-CoA mutase. In hair follicles and nail matrix cells, biotin is required for keratin protein synthesis and follicle cell proliferation. Deficiency produces the classic triad of alopecia, scaly seborrheic dermatitis, and brittle nails. Biotin competition with avidin (raw egg white glycoprotein) makes chronic raw egg consumption a documented cause of dietary biotin deficiency.
Health Benefits*
- Supports keratin synthesis — supports healthy hair and promotes follicle health
- Promotes nail strength — improves nail plate thickness (RCT evidence)
- Addresses seborrheic dermatitis associated with biotin deficiency
- Essential cofactor for fatty acid synthesis and cellular lipid metabolism
- Supports normal blood glucose metabolism through pyruvate carboxylase (gluconeogenesis) activity
- Supports biotinidase deficiency management in genetic disorders of biotin recycling
Dosing Reference
FAQ
- Why does high-serving biotin interfere with lab tests?
- High-serving biotin (≥5mg/day) competitively inhibits streptavidin-biotin-based immunoassay technology used in many clinical lab tests — including thyroid antibodies (TPO-Ab), cardiac troponin, parathyroid hormone, vitamin D, and hormone panels. False-high or false-low results can occur. Instruct patients to stop biotin 3–5 days before any lab work.
Practitioner Notes
Biotin supplementation for hair and nail conditions requires 3–6 months of consistent use before meaningful response — set realistic patient expectations. Acne-prone patients may experience breakout flares — ensure adequate pantothenic acid (B5) intake, which competes for the same enzyme systems. Acnutrol combines biotin with zinc, selenium, vitamin A, and essential fatty acids for a comprehensive skin health formula addressing multiple pathways simultaneously.
DFH Products Featuring Biotin
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Boswellic acids from Indian frankincense selectively inhibit 5-lipoxygenase and limit leukotriene synthesis — providing targeted joint, respiratory, and GI inflammatory response support.
Mechanism of Action
Boswellia serrata gum resin contains pentacyclic triterpenes — primarily β-boswellic acid, 11-keto-β-boswellic acid (KBA), and acetyl-11-keto-β-boswellic acid (AKBA), the most potent bioactive. AKBA selectively inhibits 5-lipoxygenase (5-LOX), the enzyme that generates pro-inflammatory leukotrienes (LTB4, LTC4, LTD4, LTE4) from arachidonic acid. AKBA also inhibits cathepsin G (a serine protease in neutrophils), reduces TNF-α-induced VCAM-1 expression, and suppresses NF-κB nuclear translocation.
Health Benefits*
- Supports joint comfort and mobility
- Supports healthy respiratory function
- Promotes GI mucosal integrity
Dosing Reference
Practitioner Notes
Look for extracts standardized to high AKBA content (the most bioactive boswellic acid). Onset of benefit is typically 2–4 weeks. Boswellia has a favorable GI safety profile and may actually support GI mucosal health. ArthroSoothe provides boswellia alongside glucosamine and other joint-supportive nutrients.
DFH Products Featuring Boswellia
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The master mineral for skeletal integrity — bioavailable calcium, working synergistically with vitamin D3 and K2, is foundational for lifelong bone strength and neuromuscular function.
Mechanism of Action
Calcium is the primary mineral constituent of hydroxyapatite [Ca₁₀(PO₄)₆(OH)₂] — the crystalline mineral lattice comprising approximately 70% of bone weight. Net bone formation requires the tightly coordinated action of three key factors: vitamin D3 (promotes intestinal calcium absorption via calbindin expression and osteocalcin synthesis), vitamin K2 MK-7 (activates osteocalcin via γ-carboxylation — directing calcium into bone matrix and preventing soft-tissue calcification via matrix Gla protein), and parathyroid hormone/calcitonin (regulating bone remodeling balance). MCHC (microcrystalline hydroxyapatite concentrate) provides calcium in its natural bone-matrix form with associated osteocalcin, bone sialoprotein, and growth factors.
Health Benefits*
- Provides primary mineral substrate for bone mineralization and hydroxyapatite formation
- Essential for muscle contraction, nerve impulse transmission, and cardiac rhythm
- Supports colon health — calcium binds secondary bile acids and reduces colonocyte exposure
Dosing Reference
Practitioner Notes
The cardiovascular calcification concern associated with calcium supplementation (EPIC and WHI data) appears primarily linked to isolated calcium carbonate use without K2. MCHC and food-sourced calcium appear cardiovascular-neutral. Never supplement calcium without vitamin K2 — K2 MK-7 ensures calcium is directed to bone matrix rather than vascular walls. OsteoForce provides the complete bone support matrix: MCHC, D3, K2, magnesium, zinc, and boron in a single formula.
DFH Products Featuring Calcium / Bone Support
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Supports normal estrogen and toxin clearance by promoting Phase 2 glucuronidation pathways.
Mechanism of Action
Calcium D-glucarate is a naturally occurring salt of D-glucaric acid, a Phase 2 detoxification intermediate formed during the glucuronidation pathway. When ingested, D-glucarate reaches the colon where resident microbiota metabolize it to D-glucaro-1,4-lactone, which irreversibly inhibits the enzyme beta-glucuronidase. This inhibition blocks the enterohepatic recirculation of glucuronidated xenobiotics and estrogens, preventing their reabsorption in the terminal ileum and promoting fecal elimination. This mechanism is particularly valuable in estrogen-dominant states, as it promotes clearance of estradiol and estrone conjugates before reabsorption can occur, supporting normal estrogen metabolism and detoxification.
Health Benefits*
- Promotes hepatic Phase 2 glucuronidation capacity and estrogen clearance
- Helps lessen enterohepatic recirculation of estrogen conjugates
- Supports healthy hormone balance in perimenopausal and menopausal women
- Promotes toxin elimination via enhanced fecal excretion
Dosing Reference
Practitioner Notes
D-glucarate efficacy depends on healthy gut microbiota; use concurrently with or following probiotic restoration. Monitor for increased GI transit (loose stools may indicate enhanced elimination) and adjust accordingly. Contraindicated in women with estrogen-dependent malignancies. Maintain adequate soluble fiber intake (15–25g daily) to support optimal fecal elimination of mobilized conjugates. May enhance efficacy of other Phase 2 support agents (milk thistle, NAC) through synergistic pathways.
DFH Products Featuring Calcium D-Glucarate
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A dipeptide that supports cellular health.
Mechanism of Action
Carnosine (β-alanyl-L-histidine) is an endogenous dipeptide synthesized from histidine and beta-alanine in skeletal muscle, brain, and cardiac tissue. Its imidazole ring possesses a pKa of 6.5, rendering it a physiologic buffer that quenches intracellular pH fluctuations during metabolic stress. More significantly, carnosine's histidine residue acts as a nucleophile, directly trapping reactive glucose metabolites (methylglyoxal, 1,3-dicarbonyl compounds) before they can cross-link with amino groups on proteins, nucleic acids, and lipids—a process known as glycation.
Health Benefits*
- Has been shown to help prevent advanced glycation end-product (AGE) formation
- Supports mitochondrial function and ATP production efficiency
- Supports vascular health and endothelial function
- Promotes muscle buffering capacity and exercise performance
Dosing Reference
Practitioner Notes
Carnosine exhibits excellent oral bioavailability in most individuals; however, carnosinase enzyme activity varies genetically, affecting tissue accumulation rates. Monitor fasting glucose and HbA1c to assess glycemic impact over 8–12 weeks. Use carnosine as part of comprehensive protocol alongside dietary modification and exercise. Generally well-tolerated; rare mild GI distress may occur at amounts >3000mg daily. Beta-alanine supplementation (3–5g daily) may enhance carnosine synthesis in patients with low muscle carnosine baseline.
DFH Products Featuring Carnosine
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
An Amazonian botanical with immune-supportive alkaloids supporting inflammatory balance.
Mechanism of Action
Cat's Claw (Uncaria tomentosa) contains six active oxindole alkaloids, with isopteropodine and rhynchophylline demonstrating the greatest immunosupportive potency. These alkaloids cross the blood-brain barrier and help activate protein kinase C (PKC) and phosphatidylinositol-3 kinase (PI3K) signaling cascades in macrophages and dendritic cells, enhancing phagocytosis and antigen presentation. Additionally, the pentacyclic oxindole alkaloids help promote certain enzymes.
Health Benefits*
- Helps modulate immune response, promoting balance
- Supports normal inflammatory responses
- Promotes normal natural killer cell activity and macrophage function
- Supports joint health and mobility
Dosing Reference
Practitioner Notes
Avoid use in transplant patients or those requiring intentional immune suppression. Monitor for mild GI upset, which may resolve after 1–2 weeks of consistent use. Use cautiously in autoimmune conditions requiring TNF-α antagonists. Pregnancy contraindicated due to potential uterotonic effects; use not recommended in lactation. Alkaloid content varies significantly with extraction method; standardized extracts are preferred over whole plant powders.
DFH Products Featuring Cat's Claw
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A nutrient-dense freshwater algae with heavy metal binding, chlorophyll richness, and broad phytonutrient density — chlorella supports GI detoxification and cellular repair factor delivery.
Mechanism of Action
Chlorella vulgaris and Chlorella pyrenoidosa are freshwater green algae containing chlorophyll (heavy metal chelation through porphyrin ring binding; bile acid sequestration), unique Chlorella Growth Factor (CGF — a nucleotide-peptide complex supporting cellular proliferation and repair), beta-glucan polysaccharides (immune modulation and prebiotic function), and cell wall polysaccharides that adsorb xenobiotics, pesticides, and heavy metals within the GI lumen. Clinical studies demonstrate reduced urinary mercury and cadmium levels, improved NK cell activity, and prebiotic effects on Bifidobacterium colonization.
Health Benefits*
- Binds heavy metals (mercury, lead, cadmium) in the GI tract — reduces absorption and aids mobilization
- Chlorophyll sequesters bile acids and toxins in the colon — reduces enterohepatic recirculation
- Chlorella Growth Factor (CGF) supports normal tissue repair and cellular proliferation
- Prebiotic fiber feeds Bifidobacterium — supports beneficial microbiome
Dosing Reference
Practitioner Notes
"Broken-cell wall" processing is essential for nutrient bioavailability — intact chlorella cell walls are not digested by humans. Chlorella mobilizes mercury — always support liver and kidney detoxification pathways concurrently; consider binders (activated charcoal, zeolite) for intestinal capture of mobilized metals. Monitor for Herxheimer (die-off) reactions during heavy metal protocols.
DFH Products Featuring Chlorella / Detox Greens
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
An essential trace mineral that supports healthy blood glucose metabolism and normal body composition.
Mechanism of Action
Trivalent chromium supports normal insulin signaling by activating chromodulin (low-molecular-weight chromium-binding substance), which in turn promotes the intrinsic tyrosine kinase activity of the insulin receptor and amplifies downstream PI3K/Akt signaling — increasing GLUT4 glucose transporter translocation to cell membranes. Chromium may also support central serotonin and norepinephrine signaling pathways, which may underlie its demonstrated effect on carbohydrate and sugar cravings in clinical trials, although further research is needed.
Health Benefits*
- Supports healthy insulin function
- Clinical studies demonstrate potential support for carbohydrate and sugar intake
- Supports healthy body composition
- Supports normal cholesterol and triglyceride metabolism
Dosing Reference
Practitioner Notes
Chromium picolinate is the most studied form across clinical trials; polynicotinate (niacin-bound) also has good bioavailability. Sensitol combines chromium with myo-inositol and D-chiro-inositol — addressing insulin signaling through complementary mechanisms, making it particularly supportive for individuals with hormone and metabolic concerns. Monitor blood glucose when combining with diabetes medications.
DFH Products Featuring Chromium
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The body's most abundant structural protein — collagen peptides support joint integrity, bone matrix, skin firmness, and normal connective tissue repair throughout the body.
Mechanism of Action
Hydrolyzed collagen peptides are absorbed as di- and tripeptides from the intestinal lumen and transported to target tissues — particularly cartilage, skin, tendons, and bone — where they accumulate and promote fibroblast and chondrocyte collagen synthesis via pro-collagen signaling pathways. Type I collagen provides the fibrillar scaffold for bone osteoid matrix, skin dermis, and tendon structure. Type II collagen (undenatured, UC-II) acts via a different mechanism — oral tolerance induction in gut-associated lymphoid tissue modulates cartilage-specific immune responses. Vitamin C is an obligate cofactor for lysyl and prolyl hydroxylases that cross-link collagen triple helices.
Health Benefits*
- Promotes chondrocyte and fibroblast collagen synthesis — supports normal cartilage regeneration
- Supports joint health and comfort
- Supports bone osteoid matrix and mineral integration
- Helps reduce skin wrinkle depth and promotes elasticity — RCT evidence at 2.5–10g/day
- Supports gut mucosal lining — collagen-rich foods traditionally used for GI healing
- Supports tendon and ligament structure and integrity
Dosing Reference
Practitioner Notes
Always pair collagen peptide supplementation with vitamin C to maximize hydroxylase enzyme activity and collagen cross-linking. Whole-food bone broth provides gelatin (partially hydrolyzed collagen) rather than true collagen peptides — bioavailability is lower. Undenatured type II collagen (UC-II, 40mg/day) works via oral tolerance and is not interchangeable with hydrolyzed peptide products.
DFH Products Featuring Collagen
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Patented nano-silver particles supporting microbial balance via catalytic oxidation.
Mechanism of Action
SilverSol employs a proprietary spherical nano-silver particle structure (10–80 nm). The spherical geometry maximizes surface area for electron donation without accumulating as ionic silver in systemic tissues. Catalytic oxidation is a direct mechanism distinct from traditional ionic silver bioaccumulation. The particles are too large to cross intact intestinal or blood-brain barriers, remaining compartmentalized to mucosal and topical tissues.
Health Benefits*
- Supports innate immune response
- Topical applications support skin barrier integrity and normal wound healing
- Does not impair beneficial commensal microbiota at recommended use
Dosing Reference
FAQ
- Will colloidal silver cause argyria or accumulate in organs?
- SilverSol nano-particles are too large and catalytically active to accumulate systemically; argyria risk is negligible at recommended dosages. Argyria occurred historically with ionic silver or poorly formulated products at much higher intakes. SilverSol remains compartmentalized to GI and mucosal tissues.
- Can SilverSol be used long-term?
- Acute (1–2 week) courses are well-tolerated. For seasonal maintenance, 5 mL/day is generally safe long-term. Indefinite high-serving use (>100 mL/day) lacks long-term safety data; rotate with other immune herbs or limit to 4-week cycles per season.
Practitioner Notes
SilverSol nano-particles do not accumulate systemically or cause argyria at recommended servings. However, indefinite high-serving oral consumption (>100 mL/day for months) theoretically risks silver bioaccumulation; limit courses to 2–4 weeks per season unless sustained low-serving maintenance (≤5 mL/day). May reduce absorption of some antibiotics if taken simultaneously; separate by 2 hours. Avoid in patients with silicosis or excessive occupational silver exposure. Monitor for loose stools (common, benign); may indicate dysbiotic shift.
DFH Products Featuring Colloidal Silver (SilverSol)
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The mitochondrial electron carrier and membrane antioxidant — CoQ10 is essential for ATP synthesis, cardiovascular function, and cellular energy in every tissue of the body.
Mechanism of Action
Coenzyme Q10 (ubiquinone in oxidized form; ubiquinol in reduced, active form) is a fat-soluble quinone that functions as the essential electron carrier between Complex I/II and Complex III of the mitochondrial electron transport chain — directly participating in oxidative phosphorylation and ATP synthesis. As a membrane-bound antioxidant, CoQ10 protects mitochondrial and cell membranes from lipid peroxidation. CoQ10 biosynthesis declines with age (peak at age ~20) and is critically depleted by statin drugs, which inhibit the same mevalonate pathway required for both cholesterol and CoQ10 synthesis.
Health Benefits*
- Supports mitochondrial ATP production — promotes energy in statin-depleted and aging patients
- Essential for all statin users — corrects drug-induced CoQ10 depletion
- Protects mitochondrial membranes from oxidative damage
Dosing Reference
FAQ
- Ubiquinol vs. ubiquinone — which form should I recommend?
- Ubiquinol (reduced form) is directly bioavailable without hepatic conversion — 3–5× greater plasma levels vs. ubiquinone at equivalent servings. Ubiquinol is strongly preferred for patients over 40, statin users, and those with impaired conversion capacity.
Practitioner Notes
All patients on HMG-CoA reductase inhibitors (statins) should supplement CoQ10 — statin-associated myopathy, fatigue, and cognitive effects are frequently attributable to CoQ10 depletion. May modestly potentiate anticoagulant effects of warfarin — monitor INR if adding CoQ10 to warfarin therapy. Must be taken with a fat-containing meal for adequate absorption. Consider alongside L-carnitine for comprehensive mitochondrial support.
DFH Products Featuring CoQ10
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
An adaptogenic medicinal mushroom supporting energy, oxygen utilization, and organ vitality.
Mechanism of Action
Cordyceps militaris contains bioactive polysaccharides (β-glucans), nucleosides (adenosine, uridine), and sterol compounds that enhance ATP production through multiple mechanisms. The polysaccharide fraction upregulates AMPK and PGC-1α signaling, driving mitochondrial biogenesis and increasing oxidative capacity in skeletal and cardiac muscle. The adenosine and uridine nucleosides directly serve as substrates for ATP synthesis and adenine nucleotide salvage pathways, providing rapid bioavailable energy currency. Additionally, cordyceps exhibits adaptogenic properties through HPA axis modulation to support cortisol regulation while maintaining healthy DHEA-to-cortisol ratios.
Health Benefits*
- Promotes cellular ATP production and energy availability
- Promotes oxygen utilization efficiency and aerobic capacity
- Supports mitochondrial biogenesis and metabolic resilience
- Promotes healthy stress hormone balance and HPA axis function
- Supports kidney and adrenal vitality in traditional medicine framework
Dosing Reference
Practitioner Notes
Cordyceps is non-contraindicated in most populations; rare hyperstimulation may occur in patients with pre-existing sympathetic dominance or adrenal burnout—start with lower servings. Monitor blood pressure and heart rate in hypertensive patients, particularly if concurrent stimulant use exists. Avoid concurrent use with monoamine oxidase inhibitors (MAOIs) due to trace amine content. Efficacy is enhanced by concurrent CoQ10 and carnitine supplementation, which support mitochondrial electron transport.
DFH Products Featuring Cordyceps
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The most extensively researched ergogenic supplement — creatine monohydrate saturates the phosphocreatine system for rapid ATP regeneration, supporting muscle strength, brain energy, and healthy body composition.
Mechanism of Action
Creatine monohydrate is phosphorylated to phosphocreatine (PCr) by creatine kinase in tissues with high and fluctuating energy demands — skeletal muscle, brain, and heart. PCr donates its phosphate group to ADP to rapidly regenerate ATP during high-intensity efforts (the phosphocreatine shuttle). This is the fastest ATP regeneration pathway, operating 10× faster than oxidative phosphorylation. Creatine also increases intracellular water retention (cell volumization), which acts as an anabolic signal for muscle protein synthesis. In the brain, creatine supports neuronal ATP availability for cognitive processing, memory formation, and neurological health under metabolic stress.
Health Benefits*
- Saturates the phosphocreatine system for rapid ATP regeneration during high-intensity activity
- Supports gains in muscle strength and lean body mass with resistance training
- Promotes healthy body composition through cell volumization and anabolic signaling
- Supports brain energy metabolism — promotes cognitive processing under stress and sleep disruption
- Well-established safety profile — the most extensively studied ergogenic supplement
- Supports healthy aging — emerging evidence for muscle maintenance in older adults
Dosing Reference
Practitioner Notes
Creatine monohydrate is the gold standard form — no other form (HCl, buffered, ethyl ester) has superior evidence. Loading protocols (20g/day for 5–7 days) saturate stores faster but are not necessary — 3–5g/day reaches saturation in 3–4 weeks. Creatine elevates serum creatinine (a metabolic byproduct) — this does NOT indicate renal damage but will affect eGFR calculations. Inform patients and laboratories. Safe in healthy individuals with no evidence of renal harm in studies up to 5 years. Particularly valuable for vegetarians/vegans who have lower baseline creatine stores.
DFH Products Featuring Creatine
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Turmeric's principal polyphenol — curcumin modulates NF-κB and COX-2 signaling to promote normal inflammatory responses at the cellular transcription level.
Mechanism of Action
Curcumin (diferuloylmethane) exerts support for normal inflammatory responses through multiple molecular targets. It inhibits IKKβ kinase, preventing NF-κB nuclear translocation and transcription of pro-inflammatory cytokines (TNF-α, IL-1β, IL-6, IL-8). Additionally, curcumin activates Nrf2/Keap1 antioxidant response element pathways, upregulating heme oxygenase-1, glutathione peroxidase, and other cytoprotective enzymes.
Health Benefits*
- Promotes normal inflammatory status
- Supports joint comfort
- Helps activate Nrf2 pathway — upregulates endogenous antioxidant enzyme expression
- Supports gut mucosal health
- Supports liver health through normal inflammatory and choleretic effects
Dosing Reference
Practitioner Notes
Use Evail® (micellar) or phospholipid-complexed forms — plain curcumin powder is essentially unabsorbed. May potentiate anticoagulant effects of warfarin at high servings — monitor INR. Avoid at very high amounts in active gallstone disease (promotes bile flow). Generally considered safe for long-term use. Curcumin may interfere with iron absorption — take separately from iron supplements.
DFH Products Featuring Curcumin
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A special sugar found in nature that supports the health of the urinary tract lining.
Mechanism of Action
D-mannose is a six-carbon sugar that competes with uroplakin receptors on uroepithelial cells. Unabsorbed mannose is rapidly excreted in urine (peak urinary concentration within 30 minutes), bathing the urinary epithelium with high local concentrations of the anti-adhesive compound.
Health Benefits*
- Low systemic absorption preserves commensal gut microbiota while targeting uropathogens
- Well-tolerated in most populations
- Useful adjunct during acute urinary issues to prevent biofilm re-seeding
Dosing Reference
Practitioner Notes
D-mannose is minimally absorbed and does not interact with medications. However, avoid or use cautiously in diabetic patients (especially type 1) as mannose may transiently elevate blood glucose; monitor BG or use smaller servings with food. Fructose intolerance (hereditary fructose intolerance) is rare but absolute contraindication. Common side effect: osmotic diarrhea with servings >10 g/day; start low and titrate. Mannose is adjunctive only; antibiotics are essential. Pregnant patients: generally considered safe (used in some prenatal protocols) but confirm with OB. Recurrent UTIs despite mannose may suggest anatomic obstruction, incomplete bladder emptying, or incompletely treated infection—imaging and urology referral warranted.
DFH Products Featuring D-Mannose
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A sugar found in nature that fuels ATP regeneration for cardiac, muscular, and mitochondrial energy.
Mechanism of Action
D-Ribose is a naturally occurring pentose sugar that serves as the ribosyl moiety of adenine nucleotides (ATP, ADP, AMP). Unlike glucose, which enters glycolysis requiring multiple enzymatic steps before nucleotide synthesis, D-ribose directly enters the ribose-5-phosphate synthesis pathway (pentose phosphate shunt), bypassing rate-limiting regulatory steps and providing rapid substrate availability for adenine nucleotide salvage and de novo synthesis. Ribose accelerates ATP resynthesis via the adenine nucleotide salvage pathway (APRT, HGPRT) and upregulates nucleotide metabolism genes (PFK2, AMPK) through energy sensor activation, restoring intracellular ATP concentrations 3–5 fold faster than endogenous synthesis alone. This mechanism explains ribose's particular efficacy in muscle recovery post-exertion.
Health Benefits*
- Promotes ATP regeneration in energy-compromised tissues
- Supports cardiac energy metabolism and contractile function
- Promotes muscular recovery and reduces exertion-induced fatigue
- Promotes mitochondrial ATP synthesis efficiency
- May improve exercise capacity and endurance performance
Dosing Reference
Practitioner Notes
D-Ribose has a sweet taste and is well-tolerated; mild nausea or loose stools may occur at servings >10g daily in sensitive individuals, typically resolving within 3–5 days of consistent use. Monitor blood glucose and HbA1c in diabetic patients, as ribose directly impacts glucose homeostasis; expect modest increases in fasting glucose that normalize with HPA axis and metabolic adaptation. Avoid in patients with hereditary fructose intolerance (ALDOB deficiency), as ribose shares metabolic pathways. Concurrent supplementation with CoQ10 (100–200mg daily) promotes mitochondrial ATP synthesis through complementary mechanisms.
DFH Products Featuring D-Ribose
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Glycyrrhizin-free licorice extract that soothes and protects the gastric mucosal lining.
Mechanism of Action
DGL is licorice root (Glycyrrhiza glabra) that has undergone selective extraction to remove 97% of the glycyrrhizin molecule while preserving flavonoids (liquiritigenin, isoliquiritigenin) and other chalcones responsible for GI-supportive activity. DGL flavonoids promote mucin glycoprotein synthesis and upregulate prostaglandin E1 and E2 production in gastric epithelial cells, increasing mucus layer thickness. Concurrently, DGL inhibits 5-lipoxygenase activity in infiltrating immune cells, reducing leukotriene-mediated inflammatory cell recruitment. The removal of glycyrrhizin eliminates mineralocorticoid receptor activation, making DGL safe for long-term use.
Health Benefits*
- Promotes mucin secretion and strengthens gastric mucosal barrier
- Helps modulate HPA axis and helps balance stress-induced gastric dysfunction
- Safe for long-term use without systemic steroid-like effects
Dosing Reference
Practitioner Notes
Verify DGL products are glycyrrhizin-free (>97% removal) to ensure safety in long-term use. Monitor for rare allergic reactions in patients with ragweed or celery sensitivities. Space DGL dosing apart from medications by 2+ hours, as the mucilage may reduce drug bioavailability. Use cautiously in patients on antihypertensive medications; while glycyrrhizin-free DGL is safe, licorice family cross-reactivity is theoretically possible in sensitive individuals. Combining DGL with zinc carnosine and L-glutamine promotes mucosal health synergistically through complementary mechanisms.
DFH Products Featuring DGL (Deglycyrrhizinated Licorice)
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The most abundant circulating adrenal steroid — DHEA is a sex hormone precursor and key biomarker of adrenal reserve and biological aging rate.
Mechanism of Action
DHEA (dehydroepiandrosterone) is produced primarily by the adrenal cortex zona reticularis and declines precipitously with age — peak levels at age 25 fall by approximately 80% by age 70. It serves as a circulating reservoir for peripheral tissue conversion to testosterone, estradiol, and other androgens via 3β-HSD and 17β-HSD enzyme activity in target tissues. DHEA also exerts direct immunomodulatory effects, counteracts cortisol's immunosuppressive actions via competitive glucocorticoid receptor binding, and supports bone health, insulin function, and libido through androgenic signaling.
Health Benefits*
- Provides peripheral precursor for testosterone and estradiol synthesis in target tissues
- Supports bone strength through androgenic receptor pathways
- Promotes libido, energy, and sense of well-being in age-related DHEA decline
- Helps counteract cortisol immunosuppression — supports innate immune competence
Dosing Reference
Practitioner Notes
Always confirm baseline DHEA-S (the more stable sulfated form) and sex hormone levels before initiating supplementation. Use the lowest effective amount. Contraindicated with active hormone-sensitive cancers (breast, prostate). 7-Keto DHEA does not convert to estrogen or testosterone — safer choice for patients sensitive to androgenic or estrogenic effects. Women are typically more responsive to lower servings (5–10mg); men often require 25–50mg. Monitor for androgenic side effects (acne, hair changes).
DFH Products Featuring DHEA
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A histamine-degrading enzyme supporting dietary histamine clearance in the GI tract.
Mechanism of Action
Diamine oxidase (DAO) is a copper-dependent exoglycosidase that catalyzes the oxidative deamination of histamine, converting it to imidazole acetaldehyde and ammonia via the peroxisomal oxidase pathway. Physiologically, DAO is synthesized and secreted by intestinal epithelial cells and functions as a "first-pass" defense against dietary histamine (from fermented foods, aged meats, certain fish) before absorption. In DAO-deficient or histamine-sensitive patients (due to low DAO expression, copper deficiency, or DAO gene polymorphisms), dietary histamine accumulates in the lamina propria and circulation, triggering mast cell and basophil degranulation. Supplemental DAO (typically from porcine kidney extract) replenishes local enzyme activity, reducing luminal histamine bioavailability and preventing systemic histamine load. DAO is a large protein (≈95 kDa) and is digested like dietary protein; efficacy depends on local intestinal pH, cofactor availability, and formulation stability.
Health Benefits*
- Helps reduce histamine-related reactions (flushing, headache, GI distress, urticaria) in histamine-sensitive patients consuming high-histamine meals
- Supports intestinal barrier function
- Addresses histamine intolerance independent of systemic antihistamine medication
- Allows broader dietary tolerance without strict low-histamine diet restriction
Dosing Reference
FAQ
- Does DAO work for all histamine intolerance cases?
- DAO efficacy is 50–70% in responders but variable. Some patients have low DAO expression unrelated to enzyme supply (genetic or acquired), while others have mast cell activation independent of histamine. A 2–4 week trial with high-histamine meals is the best diagnostic approach; if symptoms persist, investigate other pathways (mast cell mediators, FODMAP sensitivity).
- Can DAO be combined with low-histamine diet long-term?
- Yes, DAO allows liberalization of diet in responders. However, concurrent low-histamine diet + DAO is useful during acute flare management. Once stabilized on DAO, patients can slowly reintroduce previously restricted foods and gauge tolerance. This personalized approach is preferable to indefinite dietary restriction.
Practitioner Notes
DAO efficacy is variable and patient-dependent; some responders notice dramatic relief, others minimal. Reliable DAO activity in vivo requires acidic intestinal pH and adequate copper cofactors—copper deficiency will blunt enzyme function. DAO is contraindicated in patients on MAOIs (phenelzine, tranylcypromine)—theoretically increased adverse effects, though clinical data sparse. Histamine H1/H2 blockers (ranitidine, famotidine) may reduce DAO efficacy via pH elevation; separate by 2 hours. Pregnancy/lactation: safety data limited; recommend avoidance. FODMAP sensitivity unrelated to DAO; confirm histamine intolerance diagnosis before prescribing. Assess for concurrent MAOI or SSRI use, which impairs alternative histamine-degradation pathways.
DFH Products Featuring Diamine Oxidase (DAO)
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Comprehensive enzymatic support for protein, fat, and carbohydrate digestion — reducing occasional bloating, enhancing nutrient absorption, and supporting upper GI integrity.
Mechanism of Action
Digestive enzyme supplementation provides exogenous protease, lipase, amylase, and accessory enzyme activity to augment or replace diminished endogenous production — a common consequence of aging, occasional stress, proton pump inhibitor use, gastritis, or pancreatic insufficiency. Supplemental betaine HCl helps restore gastric acidification required for protein denaturation, pepsin activation, and mineral solubilization. Broad-spectrum enzyme complexes (proteases, lipases, amylases, cellulase, lactase, phytase) address multiple macronutrient substrates throughout the GI tract, reducing fermentable substrate available to gas-producing bacteria.
Health Benefits*
- Promotes protein hydrolysis and amino acid absorption — critical for older adults
- Helps reduce occasional postprandial bloating, gas, and fullness from incompletely digested food
- Promotes fat digestion (lipase) and fat-soluble vitamin absorption
- Supports lactose and gluten breakdown
- Promotes adequate gastric acid for mineral (iron, calcium, B12) bioavailability
- Reduces fermentable substrate available to gas-producing bacteria
Dosing Reference
Practitioner Notes
Conduct HCl challenge assessment before initiating high-serving betaine HCl — contraindicated in active peptic ulcer disease, H. pylori infection, and NSAID use. Patients on PPIs should work with a practitioner to assess hypochlorhydria before enzyme selection. Vegetarian plant-enzyme formulas (from Aspergillus) are appropriate for patients with pork or beef sensitivities. Digestzymes contains pancreatin, betaine HCl, and ox bile for comprehensive upper GI support.
DFH Products Featuring Digestive Enzymes
- DigestzymesPancreatin, betaine HCl & ox bile · Full-spectrum upper GI enzyme support · For hypochlorhydria & fat maldigestion · 90 capsulesDIG090
- Plant Enzyme Digestive FormulaBroad-spectrum plant-derived enzymes · Protease, lipase, amylase, cellulase, lactase & phytase · Vegetarian-friendly · 90 capsulesPEF090
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A brassica-derived indole that modulates estrogen metabolism — DIM shifts hepatic estrogen detoxification toward pathways for hormonal balance.
Mechanism of Action
Diindolylmethane (DIM) is formed from indole-3-carbinol (I3C) in the acidic gastric environment — I3C dimerizes to DIM upon contact with stomach acid. DIM modulates cytochrome P450 enzyme activity: upregulating CYP1A1/1A2 to favor 2-hydroxylation of estrogens while downregulating CYP1B1-driven 4-hydroxylation. DIM also exhibits weak androgen receptor antagonism and may modulate aromatase expression.
Health Benefits*
- Shifts estrogen metabolism from 16-OH and 4-OH toward 2-OH pathways
- Benefits hormonal health, skin clarity, and menstrual and endometrial health through estrogen rebalancing
- In men: reduces estrogen dominance and supports testosterone-to-estrogen ratio
Dosing Reference
Practitioner Notes
Use Evail® (micellar) or phospholipid-complexed DIM for meaningful bioavailability — plain DIM powder is poorly absorbed. Initial low-serving trial recommended — some patients experience transient estrogen-like effects (breast tenderness, spotting) as estrogen metabolism is rebalanced. DIM may cause bright yellow-green urine (harmless indole excretion). Do not use in patients with cancer. Urinary estrogen metabolite testing (2-OHE1:16α-OHE1 ratio) is the gold-standard monitoring tool.
DFH Products Featuring DIM
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Citrus-derived bioflavonoids supporting venous tone, capillary integrity, and lymphatic flow.
Mechanism of Action
Diosmin (7-O-rutinoside hesperidin) and hesperidin are O-linked flavone glycosides derived from citrus pericarp that help strengthen venous and lymphatic function through multiple mechanisms. These bioflavonoids increase endothelial nitric oxide (NO) bioavailability, enhancing vascular smooth muscle relaxation and reducing venous stasis pressure. Diosmin particularly promotes protein kinase C (PKC) and MAPK signaling in endothelial cells, increasing α-1-adrenergic responsiveness of venous smooth muscle and improving systolic contraction. Both flavonoids reduce plasma extravasation and interstitial edema by modulating claudin and occludin expression in tight junctions, stabilizing the endothelial barrier. Additionally, they inhibit TNF-α and IL-6 production in endothelial cells. Diosmin also helps restore lymphatic endothelial function and improves contractile force of lymphatic vessels, enhancing lymphatic drainage. The metabolism of hesperidin to the aglycone diosmetin by gut microbiota promotes absorption and bioavailability.
Health Benefits*
- Supports venous tone
- Supports microvasculature integrity
- Promotes lymphatic drainage
Dosing Reference
Practitioner Notes
Diosmin/hesperidin are non-toxic and lack significant drug interactions. Minor GI upset (nausea, diarrhea) reported in <5%; take with food if sensitivity. Avoid in patients with liver disease. Concomitant warfarin or antiplatelet therapy: no direct interaction, but monitor PT/INR as bioflavonoids have mild antiplatelet activity. Do not exceed 2000 mg/day; high-serving use lacks long-term safety data. May take 4–8 weeks for maximal venous symptom improvement; patient education critical for adherence.
DFH Products Featuring Diosmin / Hesperidin
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Classic immune botanicals activating innate defenses and supporting white blood cell function.
Mechanism of Action
Echinacea species (particularly E. purpurea and E. angustifolia) contain polysaccharides, alkylamides, and phenolic compounds that activate pattern recognition receptors (TLRs 2, 4, and 6) on innate immune cells. Astragalus (Astragalus membranaceus) root contains saponins and polysaccharides that promote macrophage antigen presentation, promote Th1 differentiation, and support natural killer (NK) cell activity. Together, these botanicals provide complementary innate and adaptive immune activation without promoting allergic Th2 polarization.
Health Benefits*
- Activates innate immune responses
- Promotes macrophage and natural killer cell function
- Supports healthy white blood cell proliferation and activity
Dosing Reference
Practitioner Notes
Echinacea is most effective when initiated within the first 24 hours of discomfort. Avoid continuous echinacea use >2–3 weeks, as immune tolerance may develop; cycle with 2–4 week breaks. Patients with ragweed, yarrow, or daisy allergies may experience cross-reactivity with echinacea; use cautiously or avoid. Astragalus is contraindicated with immunosuppressive medications (methotrexate, TNF-α inhibitors) and in transplant patients requiring intentional immune suppression. Generally well-tolerated; rare GI upset may occur and resolves with food administration.
DFH Products Featuring Echinacea / Astragalus
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The most bioactive green tea polyphenol — with antioxidant properties supporting metabolism, and cellular defense.
Mechanism of Action
Epigallocatechin gallate (EGCg) is a catechin polyphenol that helps quench superoxide and hydroxyl radicals with a high ORAC (oxygen radical absorbance capacity). At the molecular level, EGCg promotes various pathways in mitochondria and nucleus, enhancing cellular energy metabolism and autophagy. In the brain, EGCg crosses the blood-brain barrier and chelates redox-active metals (iron, copper), preventing Fenton-type reactions and supporting neurons.
Health Benefits*
- Supports metabolic flexibility, and normal fat oxidation
- Mitochondrial support promotes cellular energy
- Supports healthy inflammatory response
- May support fat loss and weight management in combination with healthy diet and exercise
Dosing Reference
FAQ
- Can EGCg improve weight loss on its own?
- EGCg promotes fat oxidation via AMPK activation, but is most effective combined with exercise and dietary adherence. Studies show 2–3 lb additional weight loss over 12 weeks with 300+ mg EGCg + exercise versus placebo. Think of it as a metabolic facilitator, not a standalone weight-loss agent.
- Does EGCg interact with iron supplements?
- Yes, EGCg chelates iron, reducing absorption. If iron supplementation is necessary, separate EGCg and iron by 2+ hours. Consider morning iron (with vitamin C for absorption enhancement) and evening EGCg dosing for optimal absorption of both.
Practitioner Notes
EGCg is hepatically metabolized; do not use in liver disease. At servings >400 mg, EGCg competes with COMT substrate (catecholamines, estrogen), potentially raising dopamine/norepinephrine levels—monitor closely in hypertension or ADHD patients on stimulants. May potentiate effects of warfarin (mild antiplatelet activity); monitor INR. Rare hepatotoxicity reported at very high servings (>800 mg/day) in susceptible individuals; maintain upper limit at 400 mg/day for long-term use. Iron-deficient patients: EGCg chelates iron, potentially worsening absorption; separate supplementation by 2+ hours. Pregnancy/lactation: safe at normal tea consumption levels; supplement form less studied. Caffeine-sensitive patients may prefer decaffeinated source.
DFH Products Featuring EGCg (Green Tea Catechin)
- EGCgConcentrated green tea catechin for metabolic and antioxidant supportEGC060
- DopaBoostEGCg-based formula supporting dopamine and cognitive functionDPB060
- EndoTrimMetabolic formula featuring EGCg for weight management supportEND120
- Immune Support PacketsComprehensive immune blend including EGCg catechinsISPK30
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A deeply pigmented berry with anthocyanins that support upper respiratory immune health.
Mechanism of Action
Sambucus nigra (black elderberry) fruit contains high concentrations of anthocyanins. Additionally, anthocyanins promote adaptive immune activation. Elderberry simultaneously promotes mucin secretion and supports mucociliary clearance in respiratory epithelium.
Health Benefits*
- Supports healthy immune function
- Supports balanced immune responses
- Supports upper respiratory tract health
- Supports respiratory mucosal integrity
- Provides antioxidant support through anthocyanin compounds
Dosing Reference
Practitioner Notes
Use liquid extracts or fresh berry preparations for optimal anthocyanin content; standardized extracts should guarantee 12% anthocyanin minimum. Heating (syrups) does not significantly reduce anthocyanin bioavailability. Monitor for mild constipation, which may occur due to proanthocyanidin content; adequate hydration mitigates this effect. Elderberry is well-tolerated in pediatric populations and does not typically interact with medications. Avoid inner bark or root preparations, which have emetic properties. Raw berries should not be consumed in large quantities due to potential cyanogenic glycoside content; commercial preparations are safe.
DFH Products Featuring Elderberry
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A traditional botanical with parthenolide that supports healthy cerebrovascular tone.
Mechanism of Action
Feverfew (Tanacetum parthenium) is a traditional medicinal plant with bioactive compounds including parthenolide. Parthenolide helps support cerebrovascular tone, healthy blood vessel function, and normal platelet activity. Parthenolide content is highly variable in feverfew preparations; standardized extracts (0.4–0.7% parthenolide) are necessary for reliable efficacy.
Health Benefits*
- Supports healthy cerebrovascular tone
- Supports neurological and vascular balance
- Supports healthy inflammatory responses in neural and vascular tissues
- Provides botanical support for healthy cranial vascular function
- Supports overall neurological health
Dosing Reference
Practitioner Notes
Feverfew may potentiate antiplatelet effects (aspirin, clopidogrel) and anticoagulants (warfarin)—monitor PT/INR and counsel regarding bleeding precautions. Avoid in pregnancy (parthenolide's emmenagogue effects; potential uterine stimulation). Discontinue 2 weeks before elective surgery. Sudden withdrawal after sustained use may cause "rebound" migraine exacerbation; taper gradually over 2–3 weeks. Rare contact dermatitis (feverfew is Asteraceae family); urticaria or angioedema reported in allergic individuals. GI upset and mouth ulceration common with fresh leaf preparations; standardized extracts typically better tolerated.
DFH Products Featuring Feverfew
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The prebiotic foundation of microbiome health — dietary fiber feeds beneficial bacteria, produces butyrate, regulates bowel transit, and supports cardiometabolic function.
Mechanism of Action
Soluble fiber (psyllium husk, inulin, FOS, guar gum, acacia) undergoes colonic fermentation by resident gut bacteria, producing short-chain fatty acids — primarily butyrate, propionate, and acetate. Butyrate is the primary energy source for colonocytes and a potent histone deacetylase (HDAC) inhibitor that suppresses NF-κB-driven colonic inflammation and maintains the thick mucosal protective layer. Insoluble fiber increases stool bulk and accelerates intestinal transit time. Both soluble and insoluble fibers modulate postprandial glucose through viscosity-based slowing of absorption and bile acid sequestration, which helps promote cholesterol clearance.
Health Benefits*
- Produces butyrate — primary colonocyte fuel
- Feeds beneficial Bifidobacterium and Lactobacillus populations (prebiotic effect)
- Helps blunt postprandial glucose and insulin response through viscosity mechanisms
- Promotes regular bowel transit and reduces risk of diverticular disease
- Increases satiety and supports healthy body weight management
Dosing Reference
Practitioner Notes
Increase fiber intake gradually to minimize gas, bloating, and GI discomfort from rapid microbiome fermentation shifts. PaleoFiber contains no grains, gluten, or high-FODMAP ingredients — suitable for most elimination diets. In active SIBO, some fermentable fibers (FOS, inulin) may worsen symptoms — a low-FODMAP fiber source is preferred initially. Fiber may reduce drug absorption — take medications at least 2 hours apart. Contraindicated in acute intestinal obstruction.
DFH Products Featuring Fiber
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A standardized pollen extract supporting prostate comfort and lower urinary tract function.
Mechanism of Action
Flower pollen extract contains bioactive lipophilic compounds (free fatty acids, phytosterols) and protein-bound polysaccharides that support lower urinary tract function via multiple mechanisms. Pollen sterols (particularly β-sitosterol) competitively inhibit 5-alpha reductase activity in prostate tissue. Additionally, pollen extract demonstrates direct effects on prostatic epithelium through NF-κB and TNF-α inhibition. The extract also supports normal contractility of prostatic smooth muscle via calcium channel modulation. Clinical efficacy typically emerges over 8–12 weeks.
Health Benefits*
- May help with urinary frequency, urgency, and nocturia
- Promotes urinary flow rate and post-void residual volume
- Supports prostate comfort
- May support sexual function and vitality secondary to improved urinary comfort
Dosing Reference
Practitioner Notes
Pollen extract is generally well-tolerated; GI upset (nausea, diarrhea) occurs in <5%. Avoid in patients with severe pollen allergy (cross-reactivity possible but rare with processed extract). No known direct drug interactions. Prostate cancer screening (PSA) should be performed before initiation to exclude malignancy. Long-term use (>6 months) is safe; no demonstrated tachyphylaxis. Assess for urinary retention or recurrent UTI—may indicate need for urologic evaluation independent of BPH severity.
DFH Products Featuring Flower Pollen Extract
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The brain's primary inhibitory neurotransmitter — supplemental GABA supports relaxation, occasional anxiety, and restorative sleep.
Mechanism of Action
Gamma-aminobutyric acid (GABA) is the primary inhibitory neurotransmitter of the central nervous system. PharmaGABA® (naturally fermented GABA from Lactobacillus hilgardii) has demonstrated CNS relaxation effects in EEG and salivary biomarker studies, suggesting paracellular, transcellular transport, or peripheral vagal nerve activation mechanisms. GABA also directly relaxes gastrointestinal smooth muscle and activates the enteric nervous system.
Health Benefits*
- Supports occasional anxiety and hyperarousal states
- Promotes sleep initiation and helps with sleep onset latency
- Contributes to parasympathetic "rest and digest" dominance
- Supports normal stress-induced alpha-amylase and cortisol
- Helps relax intestinal smooth muscle — beneficial for stress-related GI spasm
Dosing Reference
Practitioner Notes
Pharma GABA® (fermented form from Lactobacillus hilgardii K-3) is the most clinically studied oral GABA — superior to synthetic GABA for documented physiological effects. Do not use with benzodiazepines and sedative medications — discontinue 1–2 weeks before surgery. Highly complementary to L-Theanine, glycine, and 5-HTP for comprehensive sleep support.
DFH Products Featuring GABA
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A phytoestrogen known for supporting menopausal comfort and bone health.
Mechanism of Action
Genistein is an isoflavone phytoestrogen (from soybeans, legumes) with selective agonist activity at estrogen receptor beta (ER-β) over ER-α, conferring tissue-selective estrogenic effects. ER-β is predominant in bone, vascular endothelium, and CNS; ER-α predominance is in breast and uterus. It has demonstrated benefits in arterial health and hot flash frequency and severity via hypothalamic thermoregulatory refinement. Genistein also inhibits tyrosine kinase pathways (Src, JAK) implicated in vasomotor instability.
Health Benefits*
- Helps reduce mild menopausal vasomotor symptoms (hot flashes, night sweats)
- Promotes bone strength
- Supports cardiovascular health
- Supports mood, sleep quality, and cognitive function during menopausal transition
- Promotes vaginal epithelial integrity and lubrication
Dosing Reference
FAQ
- Does genistein affect thyroid function?
- Isoflavones modestly reduce iodine absorption, potentially affecting thyroid function in iodine-deficient individuals. In iodine-sufficient populations (most developed countries with iodized salt), this is clinically minimal. Check baseline TSH and recheck at 8–12 weeks if pre-existing hypothyroidism or low-normal iodine intake.
Practitioner Notes
Do not use Genistein in patients with cancer or history of breast cancer. May potentiate warfarin—monitor PT/INR. Soy allergy absolute contraindication. GI tolerance good; rare nausea or bloating at servings >80 mg/day. Thyroid function: isoflavones slightly reduce iodine absorption; ensure adequate iodine intake or test TSH at baseline and 8–12 weeks. Pregnancy: contraindicated (phytoestrogenic effects on fetal development). Lactation: minimal transfer; generally considered safe but data limited.
DFH Products Featuring Genistein / Isoflavones
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
An omega-6 fatty acid supporting skin health and hormonal balance.
Mechanism of Action
GLA is an 18-carbon omega-6 polyunsaturated fatty acid that serves as a precursor to dihomo-gamma-linolenic acid (DGLA), which is converted into 1-series prostaglandins and lipoxins. GLA's incorporation into immune cell membranes promotes T-cell and B-cell regulation while supporting barrier function in skin, gut, and joint tissues. The delta-6-desaturase enzyme catalyzes this conversion, a rate-limiting step that can be optimized through cofactors including zinc, magnesium, and vitamin B6.
Health Benefits*
- Supports skin barrier integrity
- Promotes hormonal balance and menstrual cycle regularity
- Supports healthy sebum composition and skin resilience
Dosing Reference
Practitioner Notes
GLA efficacy improves when combined with adequate dietary omega-3 EPA/DHA and cofactors (zinc, magnesium, B6, vitamin C). Monitor for GI symptoms in sensitive patients; borage oil formulations may require 3–8 weeks for measurable benefit. Exercise caution in patients with bleeding disorders or on anticoagulants. Ensure source quality; borage seeds should be sourced from reputable suppliers to minimize erucic acid content.
DFH Products Featuring GLA (Gamma-Linolenic Acid)
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The structural sugar of cartilage and synovial fluid — glucosamine, chondroitin, and botanicals provide comprehensive joint matrix support.
Mechanism of Action
Glucosamine sulfate is a natural component of cartilage glycosaminoglycans and provides substrate for chondrocyte synthesis of aggrecan — the large proteoglycan that gives articular cartilage its ability to resist compressive forces and retain water. Chondroitin sulfate inhibits matrix metalloproteinases (MMPs) — cartilage-degrading enzymes upregulated in OA — and provides a negative charge that retains water within the cartilage matrix. MSM (methylsulfonylmethane) delivers bioavailable sulfur for disulfide bond formation in structural proteins.
Health Benefits*
- Provides substrate for cartilage glycosaminoglycan synthesis
- Inhibits MMP cartilage-degrading enzymes
- Maintains synovial fluid viscosity and hyaluronic acid content
- MSM provides sulfur for connective tissue disulfide bonds and antioxidant glutathione
Dosing Reference
Practitioner Notes
Glucosamine sulfate is superior to the HCl form — sulfate provides both the glucosamine and the sulfur moiety for glycosaminoglycan synthesis. Mild concern about blood glucose elevation in diabetics — monitor HbA1c and fasting glucose in this population. Full clinical benefit requires 8–12 weeks of consistent supplementation. Generally considered safe — very few significant drug interactions.
DFH Products Featuring Glucosamine / Joint Support
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The master intracellular antioxidant and cellular detoxifier — glutathione neutralizes reactive oxygen species, drives phase II conjugation, and protects DNA from oxidative insult.
Mechanism of Action
Glutathione (γ-L-glutamyl-L-cysteinyl-glycine) is the most abundant intracellular antioxidant, present in virtually all cells at millimolar concentrations. In its reduced form (GSH), it directly neutralizes hydrogen peroxide, lipid peroxides, and reactive oxygen/nitrogen species via glutathione peroxidase (GPx) and peroxiredoxin enzymes. It serves as the substrate for glutathione S-transferases (GST) — the phase II conjugation enzymes that attach glutathione to electrophilic toxins, other substances, heavy metals for biliary/urinary excretion. Glutathione also regenerates oxidized vitamins C and E, supports NK cell cytotoxicity, and maintains mitochondrial membrane potential.
Health Benefits*
- Neutralizes reactive oxygen species across all cellular compartments
- Drives phase II glutathione conjugation — detoxification of xenobiotics, toxins, and heavy metals
- Regenerates vitamins C and E — maintains the entire antioxidant network
- Protects mitochondrial DNA from oxidative damage — healthy aging mechanism
Dosing Reference
Practitioner Notes
Standard oral glutathione was historically poorly absorbed due to intestinal peptidase degradation. Liposomal glutathione dramatically improves systemic delivery — achieving meaningful plasma elevation vs. standard capsules. S-Acetyl-glutathione is an alternative acetylated form that resists intestinal degradation. Always co-supplement selenium (as selenomethionine) — GPx enzymes require selenium as a catalytic cofactor. NAC (glutathione precursor) is a cost-effective alternative strategy for endogenous glutathione synthesis upregulation.
DFH Products Featuring Glutathione
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A calming amino acid that supports sleep quality, collagen synthesis, and detox conjugation.
Mechanism of Action
Glycine is a non-essential, inhibitory amino acid that binds to strychnine-sensitive glycine receptors on spinal motor neurons and brainstem neurons, dampening excitatory signaling and promoting a relaxed neuromuscular state. Within the CNS, glycine reduces glutamate-mediated excitotoxicity and promotes GABAergic tone, facilitating sleep-wake transitions and reducing sleep latency. Systemically, glycine serves as a rate-limiting substrate for creatine synthesis, collagen cross-linking, and glutathione conjugation pathways critical for Phase II detoxification.
Health Benefits*
- Promotes normal sleep onset latency, sleep quality, and duration
- Provides primary structural component for collagen (comprises one-third of collagen mass) supporting skin, bone, and joint integrity
- Supports Phase II detoxification through glutathione conjugation and methylation pathways
- Promotes healthy inflammatory response
- Supports creatine synthesis and muscle energy metabolism
- Promotes normal wound healing and tissue repair through collagen deposition
Dosing Reference
Practitioner Notes
Glycine's calming properties benefit patients with sleep initiation issues but may be less effective for sleep maintenance; consider combining with magnesium glycinate or 5-HTP. Patient palatability varies with flavored formulations. No significant drug interactions known. Approximately 10% of patients may experience mild stimulation at higher servings due to cholinergic effects—start at lower servings and titrate. Synergizes with adequate taurine, B6, and folate for optimal collagen and detox support.
DFH Products Featuring Glycine
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The brain's premier choline donor — Alpha-GPC delivers highly bioavailable choline for acetylcholine synthesis, neuronal membrane integrity, and cognitive health.
Mechanism of Action
Alpha-glycerylphosphorylcholine (Alpha-GPC) is the most bioavailable oral choline compound, readily crossing the blood-brain barrier where it donates choline for two critical functions: acetylcholine (ACh) neurotransmitter synthesis — essential for learning, memory, and attention — and normal phospholipid membrane repair via incorporation into phosphatidylcholine. Choline also serves as a methyl group donor in one-carbon metabolism.
Health Benefits*
- Provides directly bioavailable choline for acetylcholine synthesis and cognition
- Supports working memory, attention, and information processing
- Promotes neuronal membrane phospholipid repair and structural integrity
- Acts as a methyl group donor supporting methylation and liver health
Dosing Reference
Practitioner Notes
Alpha-GPC may modestly increase TMAO in some individuals — consider this in patients with cardiovascular risk concerns; omega-3 co-supplementation may partially offset this effect. Caution with acetylcholinesterase inhibitor medications (donepezil, rivastigmine) — additive cholinergic effects. Brain Vitale combines Alpha-GPC with phosphatidylserine, acetyl-L-carnitine, and Ginkgo biloba for comprehensive cognitive support.
DFH Products Featuring GPC / Choline
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The extracellular matrix's premier water-binding molecule — hyaluronic acid hydrates skin at depth, lubricates joints, and supports normal tissue repair and ocular health.
Mechanism of Action
Hyaluronic acid (HA) is a naturally occurring non-sulfated glycosaminoglycan (unbranched disaccharide repeats of D-glucuronic acid and N-acetyl-D-glucosamine) found in high concentrations in the skin dermis, articular cartilage, vitreous humor of the eye, and synovial fluid. Each HA molecule can bind up to 1,000 times its weight in water through hydrogen bonding, maintaining tissue hydration, viscoelasticity, and volume. HA also participates in wound healing signaling. Oral low-molecular-weight HA (<50 kDa) is preferentially absorbed intestinally and has been demonstrated in multiple RCTs to accumulate in skin dermis.
Health Benefits*
- Helps reduce skin wrinkle depth and improves skin smoothness — RCT evidence at 80–120mg/day
- Promotes skin hydration and transepidermal water retention
- Supports skin elasticity and dermal volume via ECM water retention
- Lubricates synovial fluid
- Supports ocular surface hydration
Dosing Reference
Practitioner Notes
Low-molecular-weight HA (<50 kDa — preferably 5–10 kDa) is preferentially absorbed orally vs. high-MW forms. For skin outcomes, combine with collagen peptides (10–20g/day) and vitamin C (500mg+) for a comprehensive extracellular matrix support approach. Particularly beneficial for postmenopausal skin changes (HA declines 75% after age 50 in the dermis). Essentially no known adverse effects or drug interactions at supplemental servings.
DFH Products Featuring Hyaluronic Acid
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Dairy-free immunoglobulins that bind toxins and reinforce the gut barrier.
Mechanism of Action
Immunoglobulin G (IgG) comprises the largest immunoglobulin fraction in human serum (75% of total antibodies) and serves critical barrier and immune surveillance functions within mucosal tissues. IgG's Fc region engagement with intestinal epithelial cells and Peyer's patches mediates enhanced clearance and tolerance induction. Additionally, IgG stabilizes claudins and tight junction proteins (occludin, ZO-1), directly reinforcing the intestinal epithelial barrier and reducing zonulin-mediated increased intestinal permeability.
Health Benefits*
- Reinforces intestinal tight junction integrity
- Binds and neutralizes certain bacteria, viruses, and lipopolysaccharides within the gut lumen
- Supports mucosal immune tolerance and reduces food sensitivity responses
- Supports immune barrier function during periods of immune challenge or stress
Dosing Reference
Practitioner Notes
IgG poorly absorbed systemically; remains bioactive in mucosal tissues. Timing of administration relative to meals may impact efficacy; general recommendation is away from high-fat meals which delay gastric emptying. Well-tolerated; minimal drug interactions. Consider combining with L-glutamine, zinc, and slippery elm for synergistic barrier support.
DFH Products Featuring Immunoglobulin G (IgG)
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A versatile cellular messenger supporting normal insulin signaling, mood, and hormonal balance.
Mechanism of Action
Inositol, a six-carbon cyclohexane polyol, functions as a critical substrate for phosphatidylinositol (PI) and phosphatidylinositol 4,5-bisphosphate (PIP2) synthesis, which form the foundation of intracellular signaling cascades. Inositol-containing phospholipids help mediate insulin receptor tyrosine kinase autophosphorylation and subsequent glucose transporter recruitment to the cell membrane. Myo-inositol, the predominant physiological isomer, crosses the blood-brain barrier and participates in serotonergic and GABA-A receptor signaling. In the reproductive endocrine system, inositol promotes follicle-promoting hormone (FSH) responsiveness, supporting normal ovulatory function and hormonal balance. A 40:1 myo-to-D-chiro-inositol ratio most closely mirrors physiological urinary ratios in ovulatory women.
Health Benefits*
- Supports healthy blood glucose metabolism and insulin function
- Supports ovulatory function and hormonal balance in women
- Supports balanced mood and occasional anxiety
- Promotes sleep quality
- Supports ovarian health
Dosing Reference
Practitioner Notes
Myo-inositol and D-chiro-inositol ratios significantly impact efficacy; evidence supports 40:1 myo:D-chiro-inositol. Allow 12 weeks for ovulatory support and 8–12 weeks for mood benefits. Monitor glucose and lipid panels in metabolic syndrome patients. Combination with N-acetylcysteine (NAC) and chromium provide additional hormonal support. Generally well-tolerated; approximately 10% of patients report mild GI effects (nausea, mild osmotic diarrhea) at higher servings. Adequate hydration supports tolerance. No significant drug interactions with medications, but coordinate timing with antidiabetic agents for glucose monitoring. Inositol crosses placenta and is present in breast milk.
DFH Products Featuring Inositol
- InositolBalanced 40:1 myo:D-chiro-inositol ratio, 2 g per scoopINO120
- SensitolInositol-based metabolic support with chromium and NACSEN120
- InsomnitolInositol with L-theanine and magnesium for sleep supportINSM60
- Insomnitol ChewablesConvenient chewable sleep formula with inositolINSC60
- NeuroCalmNervous system support with inositol and adaptogenic herbsNEUCLM
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The elemental backbone of thyroid hormones — iodine is essential for T3/T4 synthesis, basal metabolic rate, and breast and ovarian tissue health.
Mechanism of Action
Iodine (as iodide) is actively transported into thyroid follicular cells by the sodium-iodide symporter (NIS), where it undergoes organification onto thyroglobulin — catalyzed by thyroid peroxidase (TPO) — to form thyroid hormones T4 (thyroxine) and T3 (triiodothyronine). These hormones regulate basal metabolic rate, thermogenesis, cardiac output, and virtually all tissue metabolism via nuclear thyroid receptor binding. Iodine also concentrates in breast, ovarian, uterine, and prostate tissue.
Health Benefits*
- Essential substrate for T3 and T4 thyroid hormone biosynthesis
- Supports normal basal metabolic rate, thermogenesis, and energy regulation
- Reduces risk of goiter and thyroid nodule formation in deficiency states
- Supports breast tissue health
- Critical for fetal neurological development during pregnancy
Dosing Reference
Practitioner Notes
In Hashimoto's thyroiditis, iodine must be introduced very cautiously — excess iodine can trigger the Wolff-Chaikoff effect and exacerbate autoimmune thyroid inflammation. Ensure selenium adequacy concurrently — selenium-dependent enzymes (GPx, thioredoxin reductase) protect thyroid cells from hydrogen peroxide generated during thyroid hormone synthesis. Assess urinary iodine concentration (spot or 24-hour) and thyroid antibodies (TPO-Ab, TG-Ab) before supplementation.
DFH Products Featuring Iodine
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Highly bioavailable chelated iron for oxygen transport and energy production.
Mechanism of Action
Iron is a transition metal critical to oxygen-carrying capacity and cellular energy production. Within hemoglobin, iron's ferrous (+2) oxidation state reversibly binds molecular oxygen within the heme porphyrin ring, enabling oxygen loading in lungs and delivery to peripheral tissues. In myoglobin, iron provides oxygen storage within muscle. Cytochromally, iron participates in the electron transport chain via iron-sulfur clusters (Complex I-III) and cytochrome c oxidase, driving ATP synthesis. Iron-dependent enzymes including catalase, peroxidase, and ribonucleotide reductase mediate antioxidant defense and DNA synthesis. Chelated iron (iron amino acid complexes) demonstrates significantly higher bioavailability and reduced gastrointestinal irritation compared to ferrous or ferric salts, bypassing the intestinal pH-dependent absorption limitation. Chelation with amino acids promotes intestinal epithelial uptake via divalent metal transporter 1 (DMT1) and protects against ferrous iron oxidation within the acidic stomach environment.
Health Benefits*
- Supports healthy hemoglobin synthesis and oxygen-carrying capacity for energy and exercise tolerance
- Reduces iron deficiency related fatigue, and weakness
- Supports cognitive function and temperature regulation through central iron-dependent enzymes
- Supports immune health through iron-dependent T-cell proliferation
- Supports normal menstrual cycle recovery in women with heavy menstrual bleeding or iron loss
- Promotes healthy growth and development in children and adolescents
Dosing Reference
Practitioner Notes
Always establish iron deficiency etiology before supplementation; chronic excessive supplementation increases cardiovascular and hepatic oxidative stress. Monitor ferritin, serum iron, TIBC, and transferrin saturation; target ferritin 50–150 ng/mL (reserve levels above 300 ng/mL warrant further investigation for hemochromatosis risk). Chelated iron forms (Ferrochel) provide superior GI tolerance compared to iron sulfate or gluconate; absorption independent of stomach pH. Take separate from calcium, zinc, tea (tannins), and dairy (protein binding). Encourage dietary iron sources (grass-fed red meat, oysters, lentils) and adequate vitamin C, B12, and folate cofactors. Screen for BRCA1/2 and C282Y/H63D hemochromatosis mutations in those with unexplained ferritin elevation. Monitor hemoglobin during pregnancy (second/third trimester); standard supplementation typically 27 mg daily.
DFH Products Featuring Iron
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Antarctic krill-derived omega-3s bound to phospholipids — providing superior membrane incorporation, enhanced EPA/DHA bioavailability, and built-in astaxanthin antioxidant support vs. triglyceride-form fish oils.
Mechanism of Action
Krill oil from Euphausia superba provides EPA and DHA omega-3 fatty acids esterified to phospholipids (primarily phosphatidylcholine) rather than triglycerides. Phospholipid-bound omega-3s are amphiphilic — they integrate directly into cell membrane phospholipid bilayers without requiring bile salt emulsification, enabling superior absorption and tissue incorporation compared to triglyceride-form fish oils. Krill oil naturally contains astaxanthin, which protects the polyunsaturated omega-3s from oxidation and provides additional antioxidant benefits.
Health Benefits*
- Phospholipid-bound omega-3s provide superior bioavailability vs. triglyceride-form fish oil
- Direct membrane integration without requiring bile salt emulsification
- Astaxanthin content protects omega-3s from oxidation and provides antioxidant benefit
- Supports healthy inflammatory response through omega-3 pathways
- Low reflux and fishy aftertaste due to phospholipid encapsulation
Dosing Reference
Practitioner Notes
Krill oil is sourced from Antarctic krill (Euphausia superba) — sustainability certifications (MSC) are important to verify. Shellfish allergy is a relative contraindication (krill are crustaceans). Anticoagulant interaction potential similar to fish oil — monitor in patients on warfarin or antiplatelet therapy. The phospholipid delivery is particularly beneficial for patients with impaired bile acid production, cholecystectomy, or poor fat digestion. XanthOmega Krill Oil provides 880mg krill oil with 12mg AstaREAL® astaxanthin per serving.
DFH Products Featuring Krill Oil
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The nitric oxide precursor amino acid supporting endothelial function, blood flow, and vascular health.
Mechanism of Action
L-arginine is a semi-essential amino acid that serves as the primary substrate for nitric oxide synthase (NOS) enzymes, enabling conversion to nitric oxide (NO). Nitric oxide acts as a powerful vasodilator, promoting endothelial-dependent vascular relaxation and improving blood flow to tissues. This process directly promotes oxygen and nutrient delivery while supporting healthy blood pressure regulation. L-arginine also facilitates the recycling of tetrahydrofolate (BH4), an essential cofactor for NOS activity, and supports the recruitment and mobilization of endothelial progenitor cells that contribute to vascular repair and remodeling.
Health Benefits*
- Promotes vasodilation and healthy blood flow to vital organs
- Supports endothelial function and vascular integrity
- Maintains healthy blood pressure already within normal range
- Promotes exercise performance and oxygen utilization
- Supports sexual function through adequate tissue perfusion
Dosing Reference
Practitioner Notes
L-arginine may compete with lysine for intestinal absorption; consider balancing with adequate lysine intake or using between meals. Monitor in patients with herpes simplex history as arginine may increase viral replication potential. Use caution in severe renal impairment. May enhance effects of phosphodiesterase-5 inhibitors; counsel patients accordingly. Efficacy is enhanced when paired with citrulline or antioxidant support (vitamins C and E) to preserve NO bioavailability.
DFH Products Featuring L-Arginine / Nitric Oxide
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The mitochondrial fatty acid shuttle — L-carnitine transports long-chain fatty acids across the inner mitochondrial membrane for beta-oxidation, supporting cardiac energy, exercise capacity, and lipid metabolism.
Mechanism of Action
L-carnitine (β-hydroxy-γ-trimethylaminobutyrate) is essential for transporting long-chain fatty acids (C14–C20) from the cytoplasm across the inner mitochondrial membrane via the carnitine palmitoyltransferase (CPT) system for beta-oxidation. The heart derives 60–70% of its energy from fatty acid oxidation, making carnitine critical for cardiac function. L-carnitine also buffers acyl-CoA/free CoA ratios, preventing toxic accumulation of long-chain acylcarnitines, and supports healthy lactate clearance during exercise. Note: L-carnitine (free form, tartrate, fumarate) primarily supports peripheral tissues and fat oxidation, while acetyl-L-carnitine preferentially crosses the blood-brain barrier for neurological support.
Health Benefits*
- Transports long-chain fatty acids into mitochondria for beta-oxidation and energy production
- Supports cardiac energy metabolism — heart relies on fatty acid oxidation for 60–70% of ATP
- Promotes healthy exercise capacity and helps lessen post-exercise lactate accumulation
- Supports healthy lipid metabolism and body composition
Dosing Reference
Practitioner Notes
Distinguish from Acetyl-L-Carnitine (ALCAR) which is optimized for brain/CNS support. L-carnitine free form and tartrate are preferred for cardiovascular, exercise, and fat metabolism goals. Carnitine deficiency risk is elevated in vegetarians/vegans (primary dietary sources are red meat). Generally well-tolerated; GI distress possible at high servings. Some concern about TMAO production from oral carnitine — clinical significance is debated.
DFH Products Featuring L-Carnitine
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The preferred metabolic fuel of intestinal enterocytes — L-Glutamine supports normal gut lining repair, maintains mucosal immune health, and preserves barrier integrity under physiological stress.
Mechanism of Action
Glutamine is the most abundant free amino acid in plasma and the primary metabolic fuel for rapidly dividing intestinal enterocytes and immune cells (lymphocytes, macrophages). During physiological stress states — surgery, critical illness, intense training, gut disruption, or psychological stress — plasma glutamine is rapidly depleted, compromising enterocyte energy production. Supplementation maintains tight junction protein expression (claudin-1, occludin, ZO-1), preserving paracellular permeability, sustains secretory IgA production at mucosal surfaces, and supports rapid cellular proliferation required for the body's normal epithelial repair.
Health Benefits*
- Fuels enterocyte ATP production and supports intestinal epithelial turnover
- Maintains tight junction protein expression — supports normal intestinal permeability
- Supports mucosal IgA production and gut-associated immune activity
- Preserves lean muscle mass as a conditionally essential amino acid under stress
Dosing Reference
Practitioner Notes
Combine with zinc carnosine (epithelial integrity), aloe, and deglycyrrhizinated licorice for comprehensive GI protocols. Powder form delivers glutamine directly to intestinal surface more efficiently than capsules. Well-tolerated across all age groups.
DFH Products Featuring L-Glutamine
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
An essential amino acid supporting immune function, collagen synthesis, and calcium metabolism.
Mechanism of Action
L-lysine is a positively charged essential amino acid that serves multiple structural and immunological roles. Within collagen synthesis, lysine residues undergo hydroxylation to hydroxylysine via lysyl hydroxylase (requiring vitamin C, iron, and alpha-ketoglutarate cofactors), forming cross-links essential for collagen mechanical properties and tensile strength. Lysine also participates in bone matrix mineralization supporting calcium homeostasis and normal bone remodeling processes. Immunologically, lysine competes with arginine for intestinal absorption and renal reabsorption via the cationic amino acid transporter y+LAT, effectively reducing arginine bioavailability to certain microorganisms.
Health Benefits*
- Supports collagen cross-linking and connective tissue integrity in skin, bone, and vascular tissues
- Promotes calcium absorption and normal bone mineralization, supporting skeletal health
- Supports normal immune response and immune cell production
Dosing Reference
Practitioner Notes
Monitor for potential interference with calcium absorption at very high servings; maintain lysine:arginine ratio optimization. L-lysine is well-tolerated; approximately 5% of patients report mild GI upset at servings exceeding 3 g/day. Counsel on clinical improvement timeline (4–8 weeks expected). Combine with lysine-supporting botanicals (lemon balm, St. John's wort) for enhanced support.
DFH Products Featuring L-Lysine
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The calming amino acid of green tea — L-Theanine supports alpha-wave brain activity, helps manage stress without sedation, and powerfully synergizes with caffeine for focused calm.
Mechanism of Action
L-Theanine (γ-glutamylethylamide) is a non-protein amino acid found almost exclusively in Camellia sinensis (green tea) that crosses the blood-brain barrier and supports multiple neurotransmitter systems. It also helps limit glutamate excitotoxicity through NMDA receptor modulation, and promotes alpha-wave (8–12 Hz) electroencephalographic activity — the brain state associated with relaxed, wakeful focus. Combined with caffeine, L-Theanine may help with occasional anxiety, and jitteriness from caffeine while preserving cognitive performance benefits.
Health Benefits*
- Promotes alpha-wave brain activity — relaxed focus without sedation or impairment
- Supports occasional anxiety and normal stress response
- Synergizes with caffeine
- Supports sleep quality
- Helps modulate GABA and glutamate — inhibitory/excitatory balance
Dosing Reference
Practitioner Notes
The pure L-isomer (enzymatically produced) is the most researched and bioavailable form — verify that products specify the L-theanine isomer. Excellent safety profile with no clinically significant drug interactions identified. Highly complementary to 5-HTP and GABA for sleep protocols, and to adaptogenic herbs for stress management programs. Can be used during the day without sedation.
DFH Products Featuring L-Theanine
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The catecholamine precursor amino acid supporting stress resilience, focus, and thyroid function.
Mechanism of Action
L-tyrosine is a conditionally essential amino acid and direct precursor to catecholamine neurotransmitters (dopamine, norepinephrine, epinephrine) and thyroid hormones (T3/T4). The enzyme tyrosine hydroxylase converts tyrosine to L-DOPA via cofactors iron (ferrous), tetrahydrofolate (BH4), and vitamin C, forming the rate-limiting step in catecholamine synthesis. Exogenous L-tyrosine supplementation replenishes tyrosine bioavailability, supporting sustained catecholamine synthesis during high cognitive demands and physical stress. Additionally, tyrosine serves as the structural component of T3 and T4 hormonogenesis via thyroid peroxidase (TPO)-catalyzed iodination of thyroglobulin tyrosine residues, supporting normal thyroid function and metabolic rate.
Health Benefits*
- Sustains dopamine and norepinephrine synthesis during stress, supporting cognitive resilience
- Supports healthy mood
- Promotes normal thyroid hormone synthesis and metabolic function
- Supports physical performance and endurance during high-demand exercise
Dosing Reference
Practitioner Notes
L-tyrosine efficacy depends on adequate cofactors: vitamin C (500 mg), BH4 or folinic acid, iron (ferrous), and iodine for full catecholaminergic and thyroid support. Avoid in patients with uncontrolled hypertension (catecholamine elevation may increase BP); monitor BP if hypertensive or on antihypertensive therapy. Monitor thyroid function in patients on thyroid replacement; increased endogenous thyroid hormone synthesis may necessitate serving adjustment. May interact with MAOI, COMT inhibitors, and phenylephrine. Approximately 10% of patients experience mild stimulation or headache; reduce serving or divide administration.
DFH Products Featuring L-Tyrosine
- L-TyrosinePure L-tyrosine, 500 mg per capsuleTYR120
- CatecholaCalmL-tyrosine with cofactors and adaptogenic supportCAC090
- CraveArrestL-tyrosine with dopamine-supporting nutrientsCRV120
- AdrenotoneComprehensive adrenal support with L-tyrosine and adaptogensADP090
- DopaBoostL-tyrosine and mucuna pruriens for dopamine optimizationDPB060
- NeurolinkNeurotransmitter support formula with L-tyrosine and cofactorsNEU180
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A casein-derived bioactive peptide with GABA-A receptor affinity for stress reduction and calm.
Mechanism of Action
Lactium is a patented bioactive decapeptide derived from bovine casein that exhibits affinity for GABA-A receptors, the primary inhibitory neurotransmitter system in the central nervous system. This peptide crosses the blood-brain barrier and binds to allosteric sites on GABA-A receptors, promoting GABAergic signaling without acting as a full agonist or producing sedation. Clinical evidence demonstrates reductions in salivary cortisol, improved sleep latency, and subjective occasional anxiety scores without dependence potential or morning drowsiness.
Health Benefits*
- Supports normal cortisol
- Promotes calm and relaxation without sedation
- Supports healthy sleep onset and sleep quality
- Promotes GABAergic neurotransmission
Dosing Reference
Practitioner Notes
Lactium is well-tolerated and non-habit forming, making it suitable for long-term use. It does not potentiate benzodiazepines in the traditional sense but may enhance their effect slightly; counsel accordingly. Avoid in patients with known casein sensitivity or milk allergy. Onset of effects typically appears within 2–4 weeks of consistent use. No significant drug interactions documented.
DFH Products Featuring Lactium (Bioactive Milk Peptides)
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Lion's Mane supports neuroplasticity, memory formation, and gut-brain axis communication.
Mechanism of Action
Hericium erinaceus (Lion's Mane) contains two classes of unique bioactive compounds: hericenones (found in fruiting bodies) and erinacines (found in mycelium). Both promote neurotrophins essential for the growth, maintenance, and survival of cholinergic neurons in the hippocampus and basal forebrain. Erinacines are small lipophilic molecules that cross the blood-brain barrier directly, allowing CNS delivery. Research also demonstrates bidirectional support for the gut-brain axis through effects on enteric nervous system signaling.
Health Benefits*
- Supports neuron growth, maintenance, and myelination
- Supports memory, learning, and cognitive function
- Supports gut-brain axis communication
- Promotes mood stability through serotonergic and BDNF pathways
Dosing Reference
Practitioner Notes
Fruiting body extracts are preferred over mycelium-on-grain products — they contain higher concentrations of hericenones and avoid grain-based fillers. Generally very well tolerated with no significant drug interactions. Human RCT evidence most robust for cognition; animal and in vitro data support broader neurosupportive applications. Rare reports of respiratory sensitivity — monitor in mushroom-allergic individuals.
DFH Products Featuring Lion's Mane
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Trace-mineral lithium supporting BDNF production and brain health.
Mechanism of Action
Lithium is a trace mineral alkali metal that exerts neurosupportive effects primarily through inhibition of inositol monophosphatase and inositol polyphosphate 1-phosphatase (IPPase), enzymes required for the recycling of membrane phospholipids back to free inositol. This inhibition leads to relative inositol depletion ("inositol depletion hypothesis"), dampening the phosphatidylinositol signaling cascade and reducing intracellular calcium signaling in neurons predisposed to excessive excitability. Low-serving lithium orotate (using the chelated orotate form) provides bioavailable trace-level lithium.
Health Benefits*
- Promotes BDNF production and neuroplasticity
- Supports mood stability and normal emotional reactivity
- Supports cognitive function and memory consolidation
Dosing Reference
Practitioner Notes
Lithium orotate (low-serving, trace-level supplementation) carries minimal risk at recommended servings but differs significantly from lithium carbonate. This is not a replacement for pharmacological treatment and should not replace any anti-depressant or lithium medications. Monitor renal function and electrolytes (sodium, potassium) at baseline and annually; lithium competes with sodium in the kidney, requiring adequate hydration and sodium status. Avoid concurrent NSAIDs, ACE inhibitors, and thiazide diuretics, which increase lithium renal retention and toxicity risk. Adequate iodine status optimizes lithium tolerance. Counsel patients on maintaining consistent sodium intake (sudden dietary sodium reduction increases lithium reabsorption). Tremor, polyuria, or polydipsia warrant discontinuation. Contraindicated in pregnancy and uncontrolled nephrotic syndrome. Monitor thyroid function (TSH, free T4) annually; lithium inhibits thyroid hormone synthesis in susceptible individuals. Consider avoiding in patients taking anti-hypertensive drugs, anti-inflammatory drugs, analgesic drugs, or insulin. Lithium should not be used by pregnant women and breastfeeding mothers. Serum lithium levels should be monitored during use.
DFH Products Featuring Lithium Orotate
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Macular carotenoids that help filter blue light and support retinal photoreceptors.
Mechanism of Action
Lutein and zeaxanthin are xanthophyll carotenoids that selectively accumulate in the macular region of the retina where they form the macular pigment optical density (MPOD). These pigments function as blue-light absorbers and antioxidants, filtering high-energy visible light before it reaches photoreceptors and retinal pigment epithelium. Both compounds quench singlet oxygen and scavenge free radicals generated by photooxidation, thereby preventing lipid peroxidation of photoreceptor membranes and the accumulation of lipofuscin in the RPE. The carotenoid lutein undergoes partial conversion to meso-zeaxanthin in the retina, which accumulates preferentially in the foveola and provides support for this critical region for central vision.
Health Benefits*
- Helps the eye properly filter blue light
- Supports macular pigment density and visual function
- Promotes contrast sensitivity and glare recovery
- Supports visual clarity and long-term eye health
Dosing Reference
Practitioner Notes
Lutein and zeaxanthin absorption requires dietary fat; always advise consumption with meals containing fat. Bioavailability is enhanced by esterified forms and improved further when combined with other carotenoids and antioxidants (vitamins C, E, zinc). These compounds accumulate in retinal tissue over 4–8 weeks and require consistent supplementation for optimal benefit.
DFH Products Featuring Lutein / Zeaxanthin
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A cofactor in over 600 enzymatic reactions — governing ATP synthesis, nerve signaling, muscle relaxation, and restorative sleep quality.
Mechanism of Action
Magnesium is an essential cofactor for ATP synthesis — all cellular ATP exists primarily as Mg-ATP complexes, making it indispensable for every energy-requiring process. It regulates NMDA glutamate receptor gating (blocking excessive excitatory signaling), governs calcium channel activity in muscle tissue (enabling contraction-relaxation cycles), modulates HPA axis reactivity, and is required for the synthesis and activation of vitamin D, parathyroid hormone, and over 600 reactions involved in energy, protein, and nucleic acid metabolism.
Health Benefits*
- Supports mitochondrial ATP production across all tissue types
- Promotes muscle relaxation and normal contraction
- Supports sleep quality and deep-sleep architecture
- Promotes cardiovascular health
- Supports bone strength as a key structural co-mineral alongside calcium
- Helps modulate cortisol secretion and physiological stress response
Dosing Reference
FAQ
- Which magnesium form is best?
- Glycinate and malate chelate offer superior bioavailability and GI tolerance vs. oxide. L-Threonate (NeuroMag) uniquely crosses the blood-brain barrier and is preferred for cognitive and sleep applications. Oxide is poorly absorbed and primarily acts as an osmotic laxative.
- How do I assess magnesium status clinically?
- Serum magnesium reflects only 1% of total body magnesium and is poorly sensitive. RBC magnesium is a more accurate intracellular marker and can reveal deficiency even when serum levels appear normal.
Practitioner Notes
Subclinical magnesium deficiency is extremely common in Western populations. Athletes, those under chronic stress, and individuals on diuretics, PPIs, or medications that deplete magnesium are particularly at risk. Use RBC magnesium testing for accurate assessment. Caution in patients with significant renal impairment — monitor accordingly. Start with 100–200mg and titrate to bowel tolerance; loose stool is the most common serving-limiting effect.
DFH Products Featuring Magnesium
- NeuroMagMagnesium L-Threonate · 144mg elemental Mg per serving · Crosses blood-brain barrier · Cognitive & sleep supportNEUMAG
- Magnesium Malate Chelate360mg elemental Mg per 4 capsules · Albion® bisglycinate chelate · Muscle & energy supportMMC120
- Magnesium Glycinate200mg elemental Mg per 4 capsules · TRAACS® chelate · Superior GI tolerance · Sleep & relaxationMGC060
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A Mediterranean tree resin clinically studied for gastric mucosal health.
Mechanism of Action
Mastic gum is a resinous exudate from Pistacia lentiscus var. chia trees endemic to the Greek island of Chios. Its bioactive polyphenols (masticadienonic acid, isomasticadienonic acid, and related triterpenes) exert gastric mucosal supportive effects through multiple mechanisms. Mastic polyphenols also promote gastric mucus production via goblet cell activation, enhance gastric mucosal blood flow through prostacyclin production, and reduce oxidative stress through polyphenol-mediated free radical scavenging. These effects help strengthen the gastric mucosal barrier.
Health Benefits*
- Promotes gastric mucosal thickness and protective mucus layer
- Helps reduce occasional upper GI discomfort
- Supports gastric microbiota diversity
- May improve digestive comfort
Dosing Reference
Practitioner Notes
Mastic's adherence properties may affect tablet dissolution in some patients; powder or enteric-coated formulations ensure optimal gastric contact. Chewing mastic gum (non-standardized preparations) provides inconsistent polyphenol content; prefer purified extracts with documented polyphenolic standardization. Approximately 5–10% of patients report mild GI symptoms (bloating, cramping) during initial 1–2 weeks; resolves with continued use or serving reduction. Discontinue if severe allergic reactions occur (rare).
DFH Products Featuring Mastic Gum
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Immune-modulating fungi rich in beta-glucans for comprehensive immune and vitality support.
Mechanism of Action
Medicinal fungi (Ganoderma lucidum, Lentinula edodes, Grifola frondosa, Cordyceps sinensis, and others) contain bioactive polysaccharides, particularly beta-glucans (β-1,3 and β-1,6 linkages), which serve as pathogen-associated molecular patterns (PAMPs) recognized by pattern recognition receptors (TLRs, dectin-1) on innate immune cells including macrophages, dendritic cells, and neutrophils. This recognition triggers MyD88-dependent and CARD9-dependent signaling cascades, enhancing macrophage phagocytosis, pro-resolving cytokine production (IL-10, TNF-α, IL-6), dendritic cell maturation, and enhanced T-cell priming. Beta-glucans also activate complement pathways and NK cell cytotoxicity. Some species (Cordyceps) contain adenosine and cordycepin, supporting mitochondrial energy metabolism and ATP synthesis, providing adaptogenic ergogenic effects.
Health Benefits*
- Supports balanced immune response
- Supports immune resilience during high-stress periods
- Promotes healthy mitochondrial function and cellular energy production
- Supports normal sleep quality and stress resilience through adaptogenic mechanisms
- Promotes oxygen utilization and physical endurance capacity
Dosing Reference
Practitioner Notes
Medicinal mushroom efficacy highly dependent on cultivation method and extraction process; mycelium (fungal root network) provides superior beta-glucan content compared to fruiting bodies. Allow 2–4 weeks for measurable immune benefits. Monitor for rare allergic reactions in those with mold sensitivities; approximately 2–3% of patients report mild GI symptoms (nausea, loose stool) during initial 1–2 weeks. No significant drug interactions. Combine with vitamin D3 and probiotics for synergistic immune support. Monitor patients on anticoagulation therapy; some fungal species (shiitake, reishi) may possess mild anticoagulant properties.
DFH Products Featuring Medicinal Mushrooms
- MycoSupremeComprehensive medicinal mushroom blend, standardized beta-glucansMYC060
- ImmunoBerry LiquidLiquid mushroom extract with berry polyphenolsIBL4OZ
- Immune Support PacketsSingle-serve packets featuring mushroom, botanical, and nutrient blendsISPK30
- CogniAidMushroom formula with cognitive-supporting herbsCOG060
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The pineal chronobiotic hormone that synchronizes circadian rhythm, promotes sleep onset, and serves as a potent mitochondrial support.
Mechanism of Action
Melatonin (N-acetyl-5-methoxytryptamine) is synthesized from serotonin in the pineal gland in response to darkness, signaling through MT1 and MT2 G-protein-coupled receptors in the suprachiasmatic nucleus (SCN) to synchronize the central circadian clock. MT1 activation promotes sleepiness by inhibiting SCN neuronal firing. MT2 activation phase-shifts the circadian clock — useful for jet lag and shift work adaptation. It accumulates in mitochondria at concentrations 100× higher than plasma levels, directly protecting the electron transport chain from oxidative damage.
Health Benefits*
- Synchronizes circadian rhythm
- Accelerates sleep onset latency
- Phase-shifts the circadian clock for jet lag and shift work adaptation
- Concentrates 100× above plasma levels in mitochondria
- Supports GI mucosal integrity and melatonin-rich enterochromaffin cell function
Dosing Reference
Practitioner Notes
Start with the lowest effective serving (0.3–1mg) — supraphysiologic servings (5–10mg) are not necessarily more effective for sleep and may cause morning grogginess, vivid dreams, or paradoxical wakefulness. Sustained-release formulations (SRT) better replicate the physiological nocturnal melatonin curve for middle-of-the-night awakenings. Melatonin may interact with immunosuppressants, antihypertensives, and diabetes medications. Safe for short- and long-term use in adults.
DFH Products Featuring Melatonin
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Silymarin's hepatosupportive flavonolignans — milk thistle supports liver detoxification pathways, and promotes glutathione synthesis.
Mechanism of Action
Silymarin — the active flavonolignan complex from Silybum marianum seeds, comprising silybin, silydianin, and silychristin — exerts hepatosupportive effects through multiple mechanisms. Silybin (the principal compound) promotes CYP enzyme activity, helps upregulate hepatic glutathione synthesis, and promotes hepatocyte protein synthesis via RNA polymerase I activation; and helps inhibit leukotriene synthesis.
Health Benefits*
- Supports hepatocyte integrity through competitive membrane transporter binding
- Promotes hepatic glutathione synthesis — upregulates GSH biosynthetic enzymes
Dosing Reference
Practitioner Notes
Silymarin inhibits CYP3A4, CYP2C9, and P-glycoprotein — screen for drug interactions with medications metabolized by these enzymes (antiretrovirals, immunosuppressants, some statins). Safe for long-term use.
DFH Products Featuring Milk Thistle / Silymarin
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A glycerol monoester of lauric acid that disrupts lipid-coated membranes — providing broad-spectrum microbial balance.
Mechanism of Action
Monolaurin (glycerol monolaurate) is a medium-chain fatty acid monoester derived from lauric acid (C12:0). It has been shown to disrupt lipid membranes by integrating into the lipid bilayer. Monolaurin selectively targets lipid-coated cells while sparing beneficial Lactobacillus species (which lack lipid envelopes).
Health Benefits*
- Disrupts lipid-coated cells by destabilizing cell membranes
- Provides broad-spectrum activity
- Selectively spares beneficial Lactobacillus flora
- Supports immune responses
Dosing Reference
Practitioner Notes
Monolaurin targets lipid-enveloped organisms selectively — it will not affect non-enveloped microorganisms with intact outer membranes. Generally well-tolerated; Herxheimer-like reactions possible at initiation — start low and titrate.
DFH Products Featuring Monolaurin
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Bioavailable organic sulfur supporting joint comfort and connective tissue health.
Mechanism of Action
Methylsulfonylmethane (MSM) is an organosulfur compound containing approximately 34% bioavailable elemental sulfur, essential for biosynthesis of sulfur-containing amino acids (methionine, cysteine) and their downstream products including glutathione, taurine, and sulfated glycosaminoglycans (chondroitin sulfate, keratan sulfate, dermatan sulfate). Sulfur incorporation into collagen type II and proteoglycan core proteins stabilizes tertiary structure through disulfide cross-linking, enhancing tensile strength and load-bearing capacity of cartilage, bone, and connective tissue. Additionally, sulfur from MSM participates in sulfation reactions within articular cartilage, supporting glycosaminoglycan sulfation and cartilage matrix integrity. MSM's organosulfur structure provides improved bioavailability compared to inorganic sulfates, with rapid intestinal absorption and incorporation into tissues.
Health Benefits*
- Supports joint comfort and mobility
- Promotes collagen synthesis and cross-linking in cartilage, tendons, and ligaments
- Supports connective tissue flexibility and range of motion
- Promotes healthy hair, skin, and nail structure through collagen and keratin support
- Supports gastrointestinal mucosal barrier function through sulfated polysaccharide synthesis
Dosing Reference
Practitioner Notes
MSM efficacy improves when combined with vitamin C (essential for collagen hydroxylation), glucosamine, chondroitin, and type II collagen. Clinical benefits typically manifest within 4–8 weeks of consistent use; maximum benefit at 12 weeks. Approximately 10–15% of patients report mild GI symptoms (nausea, loose stools, headache) during initial 1–2 weeks; start at 1 g daily and titrate upward. Some individuals report sulfur odor on breath (rare); reduces with continued use. MSM may enhance blood-thinning effects of anticoagulants; monitor if concurrent use required. Adequate hydration optimizes MSM absorption and tissue distribution.
DFH Products Featuring MSM
- ArthroSoothe™ SupremeComprehensive joint formula with MSM, glucosamine, chondroitin, type II collagen & hyaluronic acid · Connective tissue & cartilage supportARSSUP
- ArthroSoothe™Joint support blend featuring MSM with glucosamine sulfate, boswellia & hyaluronic acid · Promotes healthy cartilage & joint comfortARS120
- GI Revive® (capsules)Gut-lining support blend with MSM, L-glutamine, zinc carnosine, DGL & soothing botanicals · Intestinal mucosa & digestive comfort · CapsulesGRV210
- GI Revive® (powder)Gut-lining support blend with MSM, L-glutamine, zinc carnosine, DGL & soothing botanicals · Intestinal mucosa & digestive comfort · PowderGIR225
- Amino-D-Tox™Amino acid formula with MSM and sulfur-bearing nutrients supporting Phase II hepatic detoxification & conjugation pathwaysAMT090
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A plant-based L-DOPA source fueling dopamine synthesis for mood, motivation, and focus.
Mechanism of Action
Mucuna pruriens (velvet bean) is a tropical legume containing 4–7% L-3,4-dihydroxyphenylalanine (L-DOPA) by dry weight, a direct dopamine precursor that crosses the blood-brain barrier via the large neutral amino acid transporter type 1 (LAT1). Within the substantia nigra and ventral tegmental area, L-DOPA is converted to dopamine via the enzyme aromatic L-amino acid decarboxylase (AADC), requiring cofactors pyridoxal-5-phosphate (B6), iron, and molybdenum. In the body, dopamine promotes motivation, motor function, and cognitive flexibility.
Health Benefits*
- Supports dopamine synthesis for motivation, and drive
- Promotes mental focus, attention, and cognitive flexibility
- Supports healthy mood
- Promotes motor function
- Supports healthy libido and sexual function
Dosing Reference
Practitioner Notes
Mucuna pruriens efficacy depends on serving standardization to L-DOPA content (15% minimum preferred). Benefits compound with consistent 2–4 week use. Monitor for increased stimulation or dysphoria; if present, reduce serving or take only in morning. Screen for contraindications: uncontrolled hypertension, acute cardiac arrhythmias, melanoma, or concurrent MAOI/COMT inhibitor use. Avoid excessive dopaminergic stimulation in patients with psychotic disorders or bipolar disorder mania. Adequate B6 (25–50 mg) promotes L-DOPA conversion; add if deficiency suspected. Approximately 10% of patients report mild nausea; take with light food if necessary. Combine with L-tyrosine for synergistic dopaminergic support. Monitor thyroid function if long-term use.
DFH Products Featuring Mucuna pruriens (L-DOPA)
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A comprehensive, bioavailable foundation of activated vitamins and chelated minerals — closing nutritional gaps that even optimal diets rarely fill completely.
Mechanism of Action
Vitamins and minerals function as essential cofactors, coenzymes, and structural components in thousands of biochemical reactions — from mitochondrial energy production to DNA repair and immune signaling. Practitioner-grade multivitamins distinguish themselves through bioavailable forms: methylfolate (5-MTHF) and methylcobalamin for methylation-impaired individuals (MTHFR SNPs), pyridoxal-5-phosphate (P5P) for active B6 activity, and Albion® mineral chelates for optimal intestinal absorption compared to inorganic salts.
Health Benefits*
- Provides the full spectrum of essential micronutrients in clinically relevant forms
- Supports methylation with activated B vitamins (5-MTHF, methylcobalamin, P5P)
- Delivers antioxidant nutrients (vitamins C, E, selenium, zinc) for immune and cellular health
- Supports bone integrity through calcium, magnesium, vitamin D3, vitamin K2, and boron
- Bridges dietary gaps from food quality decline, malabsorption, and increased metabolic demands
- Provides cofactors for neurotransmitter synthesis, hormone metabolism, and energy production
Dosing Reference
Practitioner Notes
Patients with MTHFR C677T or A1298C polymorphisms benefit significantly from methylfolate-containing formulas — folic acid may accumulate as unmetabolized folic acid (UMFA) and impair immune function. Avoid iron-containing multivitamins unless deficiency is confirmed.
DFH Products Featuring Multivitamin / Minerals
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
An amino sugar that fuels mucosal glycoprotein synthesis and helps strengthen the GI protective mucosal barrier.
Mechanism of Action
N-acetyl-D-glucosamine (NAG) is an amino sugar that serves as the primary building block for glycosaminoglycans (GAGs) and proteoglycans, which are critical structural components of the intestinal mucus layer and epithelial glycoproteins. NAG becomes incorporated into mucins (MUC2, MUC5AC) through the hexosamine biosynthetic pathway and directly supports the production of the protective mucus gel layer overlying the gut epithelium. This enhanced mucus barrier strengthens the physical seal between the intestinal lumen and epithelial cells, promotes normal intestinal permeability, and provides a prebiotic substrate for beneficial bacteria. NAG also provides substrate for the synthesis of tight junction proteins.
Health Benefits*
- Strengthens the intestinal mucosal barrier
- Supports glycoprotein and mucin synthesis in GI tissues
- Promotes normal intestinal permeability and tight junction integrity
- Provides prebiotic substrate for beneficial bacteria
- Supports healthy intestinal immune function
Dosing Reference
Practitioner Notes
NAG is well-tolerated with minimal adverse effects. May cause mild digestive bloating in sensitive individuals if introduced too rapidly; recommend gradual titration. NAG may compete with glucose metabolism; use caution in diabetic patients and monitor blood glucose if using higher servings. Combine with other mucosal-support compounds (L-glutamine, bone broth collagen, slippery elm) for synergistic effect. Efficacy is enhanced when intestinal function is simultaneously supported through dietary and probiotic intervention.
DFH Products Featuring N-Acetyl-D-Glucosamine
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The direct glutathione precursor — NAC replenishes cellular antioxidant reserves while providing mucolytic and hepatosupportive effects.
Mechanism of Action
N-Acetyl-L-Cysteine (NAC) provides cysteine — the rate-limiting substrate for intracellular glutathione (GSH) biosynthesis via the gamma-glutamylcysteine synthetase pathway. By restoring depleted GSH pools, NAC helps attenuate oxidative stress-driven NF-κB activation. NAC also directly reduces disulfide bonds in mucin glycoproteins (mucolytic action), cleaves viscous mucus in respiratory and GI tissues.
Health Benefits*
- Restores intracellular glutathione — the body's master antioxidant and detoxifier
- Supports liver health
- Reduces mucus viscosity — supports respiratory health
- Promotes a healthy inflammatory response
Dosing Reference
Practitioner Notes
NAC has a strong fishy odor — counsel patients to expect this. GI upset (nausea, vomiting) is the most common serving-limiting side effect; reduce serving and titrate up gradually. Contraindicated concurrently with nitroglycerin (can cause severe hypotension and headache). May slightly thin blood at high servings — monitor in anticoagulant users. Valuable in lung and liver health, and detoxification protocols.
DFH Products Featuring NAC
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Next-generation NAD+ precursors supporting mitochondrial health and healthy aging.
Mechanism of Action
Nicotinamide adenine dinucleotide (NAD+) is a central cellular coenzyme critical for redox reactions in glycolysis, the citric acid cycle, and the electron transport chain, serving as the primary electron carrier in mitochondrial ATP synthesis. Cellular NAD+ declines with aging and metabolic stress, impairing mitochondrial energy production, sirtuin (NAD+-dependent deacetylase) signaling, and poly-ADP-ribose polymerase (PARP) DNA repair mechanisms. Nicotinamide riboside (NR) and nicotinamide mononucleotide (NMN) are endogenous NAD+ precursors that bypass rate-limiting steps in the de novo and Preiss-Handler pathways. NR utilizes nicotinamide riboside kinase (NRK1/NRK2) conversion to nicotinamide mononucleotide (NMN), subsequently converted to NAD+ via NMNAT enzymes. NMN directly enters the Preiss-Handler pathway, providing a more direct route to NAD+ synthesis. Both NR and NMN restore cellular NAD+ pools, reactivating sirtuin-mediated deacetylation cascades (SIRT1-7) that govern mitochondrial biogenesis, autophagy, circadian rhythm regulation, and metabolic homeostasis.
Health Benefits*
- Restores cellular NAD+ and mitochondrial ATP production capacity
- Supports mitochondrial biogenesis and healthy mitochondrial function
- Promotes the body's normal DNA repair capacity through PARP activation
- Promotes healthy circadian rhythm function and metabolic synchronization
- Supports healthy aging
Dosing Reference
Practitioner Notes
NR and NMN demonstrate superior bioavailability compared to direct NAD+ supplementation (which is poorly absorbed); however, relative bioavailability varies based on formulation and individual metabolic factors. Allow 4–8 weeks for measurable metabolic benefits. Monitor for tachyphylaxis (diminished response); some evidence suggests benefit of periodic "off-weeks" (skip 1 week monthly). Combine with circadian-aligned dosing (morning preferred) and adequate sleep. May help support effectiveness of caloric restriction and exercise-based metabolic interventions. Approximately 5% of patients report mild headache or hyperuricemia (due to increased purine metabolism); reduce serving or discontinue if concerning. Screen for gout risk; monitor uric acid if family history present.
DFH Products Featuring NAD+ Precursors (NR / NMN)
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Controlled-release niacin supporting healthy cholesterol metabolism and cardiovascular function.
Mechanism of Action
Niacin (nicotinic acid) is an essential B-vitamin precursor to NAD+ and NADP+, critical coenzymes in energy metabolism and cellular redox reactions. Controlled-release formulations deliver niacin gradually, minimizing the flushing response (prostaglandin-mediated vasodilation) while sustaining lipid supportive effects. Extended-release niacin demonstrates superior efficacy compared to immediate-release or timed-release formulations.
Health Benefits*
- Helps promote normal cholesterol and lipid metabolism
- Promotes a healthy inflammatory response and supports healthy vascular endothelial function
- Supports NAD+-dependent cellular energy and stress resistance pathways
Dosing Reference
Practitioner Notes
Niacin efficacy for lipid support requires servings of 1–3 g daily; nutritional servings (10–20 mg) are insufficient. Extended-release formulations demonstrate superior efficacy and flushing reduction compared to immediate-release formulations; verify formulation in product. Initial flushing response (facial erythema, pruritus) occurs in 70–80% of patients within first 1–2 hours; educate on flushing as benign and self-limiting. Minimize flushing by: (1) taking with food, (2) preceding with aspirin (325 mg, 30 minutes prior), (3) avoiding alcohol and hot beverages, (4) gradual serving titration. Monitor glucose in prediabetic/diabetic patients; niacin may increase fasting glucose (mild, transient) through hepatic glucose output reduction. Monitor liver function tests (ALT, AST) and uric acid; niacin elevates uric acid and may precipitate gout in susceptible patients. Contraindicated in uncontrolled gout or severe hyperuricemia. Screen for liver disease; monitor LFTs at baseline and 6–8 weeks. Benefits emerge within 2–4 weeks; maximal benefit at 8–12 weeks. Combine with statins for additive support; niacin may slightly increase statin concentrations (monitor for myopathy symptoms).
DFH Products Featuring Niacin (Vitamin B3)
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Mediterranean botanical with immune and cardiovascular-supportive polyphenols.
Mechanism of Action
Olive leaf extract contains oleuropein and other secoiridoid polyphenols that exert multiple immune supportive mechanisms. These compounds have been shown to support endogenous antioxidant enzyme activity through NF-κB suppression pathways. The polyphenolic content also promotes vascular endothelial function and supports healthy lipid oxidation profiles, contributing to cardiovascular health.
Health Benefits*
- Broad-spectrum immune support
- Cardiovascular support
- Inflammatory response support
- Detoxification support
Dosing Reference
Practitioner Notes
Olive leaf extract is well-tolerated with minimal adverse effects. May cause mild Herxheimer-like reactions due to microbial balancing activity; counsel patients to stay hydrated. Do not use in patients taking blood pressure medications. Monitor PT/INR in warfarin users as polyphenols may have mild anticoagulant activity.
DFH Products Featuring Olive Leaf Extract
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Long-chain EPA and DHA — the cornerstones of cellular membrane integrity, systemic inflammatory balance, and cardiovascular and neurological health.
Mechanism of Action
EPA and DHA are incorporated into phospholipid membranes of every cell in the body, modulating membrane fluidity and receptor function. Both EPA and DHA are precursors to specialized pro-resolving mediators (SPMs) — resolvins, protectins, and maresins — which support healthy inflammatory responses. DHA is essential for neuronal synaptic membrane fluidity, supporting neurotransmitter receptor density and brain-derived neurotrophic factor (BDNF) expression.
Health Benefits*
- Promotes healthy inflammatory responses
- Supports neurological health, mood stability, and cognitive function
- Helps support joint comfort
- Promotes healthy pregnancy outcomes and fetal brain/retinal development
Dosing Reference
FAQ
- Why does fish oil form matter?
- Triglyceride (TG) form omega-3s are absorbed 70% more efficiently than ethyl ester (EE) form and do not require pancreatic lipase re-esterification. OmegAvail products use the superior TG form, ensuring clinically meaningful tissue delivery.
Practitioner Notes
Monitor in patients on anticoagulant therapy — high-serving omega-3s (≥3g/day) may modestly extend bleeding time. Omega-3 index (erythrocyte EPA+DHA %) is a validated biomarker; target 8–12% for cardiovascular risk reduction. Store in refrigerator after opening to help prevent oxidation.
DFH Products Featuring Omega-3 Fatty Acids
- OmegAvail Hi-Po2,200mg EPA+DHA per 2 softgels · Re-esterified TG form · Molecularly distilled · Highly potent cardiovascular & inflammatory supportOPO060
- OmegAvail Synergy860mg EPA+DHA per 2 softgels · With GLA & vitamin D3 · Inflammatory support · TG formOVS060
- OmegAvail TG10001,000mg EPA+DHA per softgel · Ultra-concentrated TG form · One-per-day convenienceOV1000
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A powerful aromatic oil with broad-spectrum properties for GI and immune support.
Mechanism of Action
Oregano oil's potency derives primarily from carvacrol and thymol, phenolic monoterpenes. These compounds help promote microbial balance. In the GI tract, oregano oil supports healthy inflammatory immune responses and supports beneficial commensal organism survival, thereby supporting microbiota diversity and barrier function.
Health Benefits*
- Comprehensive microbial balance for gastrointestinal health
- Mucosal immune support
- Possesses high ORAC values
- Digestive comfort support
Dosing Reference
Practitioner Notes
Always recommend enteric-coated formulations to protect gastric mucosa and ensure intestinal delivery. Oregano oil may cause temporary digestive upset in sensitive individuals; initiate at lower servings and titrate gradually. Contraindicated in pregnant/nursing women due to potential uterotonic activity. Monitor for interactions with antiplatelet medications; mild anticoagulant properties documented. Use caution in patients with phenol sensitivity or thyroid conditions.
DFH Products Featuring Oregano Oil
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Non-GMO yellow pea protein isolate — providing a dairy-free, complete protein source with emerging benefits for cardiovascular health and satiety.
Mechanism of Action
Pea protein isolate (from Pisum sativum) provides a complete amino acid profile with particularly high arginine content — supporting nitric oxide synthesis and vascular health. The protein matrix promotes incretin release (GLP-1, CCK) supporting post-meal satiety. Pea protein is free of the common allergens found in dairy, soy, and gluten.
Health Benefits*
- Complete plant protein with high arginine content for nitric oxide and vascular support
- Promotes post-meal satiety via incretin release (GLP-1, CCK)
- Free of dairy, soy, and gluten
- Supports healthy body composition and muscle maintenance
- Suitable for vegetarian, vegan, and elimination diets
Dosing Reference
Practitioner Notes
Pea protein is the preferred plant protein for patients with dairy allergy, lactose intolerance, or soy sensitivity. Non-GMO North American yellow peas are the standard source. Slightly lower in methionine than whey — not clinically significant at recommended servings. Glucomannan fiber is often added to pea protein formulas (VegeMeal) to enhance satiety. PurePaleo Protein uses beef protein as another dairy-free alternative. VegeCleanse and PaleoCleanse Plus use pea protein as a base for their detoxification functional powders.
DFH Products Featuring Pea Protein
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A phospholipid essential to neuronal membrane architecture — PS supports memory recall, promotes normal cortisol response, and helps maintain cognitive resilience.
Mechanism of Action
Phosphatidylserine (PS) is an aminophospholipid concentrated in the inner leaflet of neuronal cell membranes, comprising approximately 15% of total brain phospholipids. It modulates membrane fluidity, neurotransmitter receptor density and sensitivity, and facilitates ion channel function. PS supports the hypothalamic-pituitary-adrenal (HPA) axis, helping promote normal ACTH and cortisol secretion in response to physical and psychological stressors. Multiple randomized controlled trials demonstrate support for memory, learning, and verbal recall in adults.
Health Benefits*
- Supports neuronal membrane integrity, synaptic density, and receptor function
- Supports learning capacity and concentration
- Synergistic with DHA — PS+DHA formulations show additive benefits
Dosing Reference
Practitioner Notes
PS is well-tolerated with no significant drug interactions. Combine with omega-3 DHA for synergistic membrane benefit — DHA is incorporated into the same phospholipid membrane as PS. Effects require 4–8 weeks of consistent supplementation.
DFH Products Featuring Phosphatidylserine
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Plant-derived fats that competitively inhibit cholesterol absorption — plant sterols provide a clinically validated, approach to lipid support.
Mechanism of Action
Phytosterols (beta-sitosterol, campesterol, stigmasterol, brassicasterol) are plant-derived sterols that are structurally similar to cholesterol and compete with it for incorporation into intestinal micelles — the bile acid-phospholipid transport vehicles required for cholesterol solubilization and absorption. By displacing dietary and biliary cholesterol from micelles, phytosterols help reduce intestinal cholesterol absorption. At 2g/day, meta-analyses of over 80 RCTs demonstrate benefits for cholesterol and lipid metabolism.
Health Benefits*
- Inhibits intestinal absorption of both dietary and biliary cholesterol
- No systemic side effects — acts entirely within the GI lumen
- Helps maintain healthy lipid profiles
Dosing Reference
Practitioner Notes
Plant sterols must be taken with fat-containing meals — they require micellar solubilization to compete with cholesterol. Do not use in patients with sitosterolemia (rare genetic condition — phytosterol hyperabsorption causing accelerated atherosclerosis). Minor reduction in fat-soluble carotenoid absorption has been noted — a diet rich in colorful vegetables mitigates this. Safe and effective for long-term use as part of a cardiovascular health strategy.
DFH Products Featuring Plant Sterols
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The essential electrolyte mineral for normal blood pressure regulation and cellular function.
Mechanism of Action
Potassium serves as the principal intracellular cation, essential for Na+/K+-ATPase pump function maintaining cellular osmotic balance, membrane potential, and resting metabolic rate. Through maintenance of cellular K+ concentrations, potassium directly regulates vascular smooth muscle tone and endothelial nitric oxide production, supporting healthy blood pressure already within the normal range through opposing sodium-induced vasoconstriction. Adequate dietary potassium intake helps reduce sodium reabsorption and blood volume expansion. In skeletal muscle, intracellular K+ is critical for excitation-contraction coupling, metabolic efficiency, and glucose transport via GLUT4 expression. Potassium citrate and glycinate forms provide additional bicarbonate-generating or amino acid benefits beyond mineral replacement.
Health Benefits*
- Supports healthy blood pressure already in the normal range
- Skeletal muscle performance and recovery support
- Cellular energy production efficiency and metabolic rate support
- Acid-base balance maintenance
Dosing Reference
Practitioner Notes
Potassium supplementation requires careful risk-benefit assessment and monitoring in patients with renal impairment, type 2 diabetes, or concurrent ACE inhibitor/ARB/NSAID use due to hyperkalemia risk. Serum potassium and creatinine monitoring every 4–6 weeks recommended during initiation or dosage changes. Citrate or glycinate forms superior to chloride for tolerability and acid-base balance. Avoid in patients with acute kidney injury or potassium-sparing diuretic therapy. Concurrent magnesium and sodium balance optimization promotes cardiovascular outcomes.
DFH Products Featuring Potassium
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A redox cofactor that promotes mitochondrial biogenesis and supports neuron health during oxidative stress.
Mechanism of Action
Pyrroloquinoline quinone (PQQ) is a small-molecule quinone cofactor with powerful redox cycling capabilities that acts as a catalytic coenzyme for mitochondrial electron transport and cellular signaling. At the molecular level, PQQ activates the PGC-1α/NRF1/TFAM signaling axis, the master regulator of mitochondrial biogenesis, thereby promoting the replication and proliferation of dysfunctional mitochondria. Through dual mechanisms, PQQ promotes ATP production, reduces mitochondrial ROS generation, and provides neurosupport against excitotoxicity and protein aggregation.
Health Benefits*
- Promotes mitochondrial biogenesis and ATP production
- Provides free radical scavenging activity
- Helps support neurons from oxidative stress
- Promotes cognitive function and memory formation
- Supports cellular energy metabolism and physical performance
Dosing Reference
Practitioner Notes
PQQ is well-tolerated with no documented toxicity. Bioavailability is enhanced when consumed with fat-containing meals and with other antioxidants (CoQ10, NAC, vitamin E). PQQ may enhance mitochondrial-supportive interventions (CoQ10, carnitine, creatine); consider timing if using multiple mitochondrial agents.
DFH Products Featuring PQQ (Pyrroloquinoline Quinone)
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The master precursor hormone supporting cognitive function and hormonal cascade balance.
Mechanism of Action
Pregnenolone is the initial neurosteroid synthesized from cholesterol within mitochondria of adrenal and nervous tissue, serving as the obligatory precursor to all C-19 and C-21 steroid hormones. This unique neurosteroid supports synaptic plasticity, long-term potentiation, and learning-dependent gene expression independent of downstream hormone conversion. Age-related declines in pregnenolone production correlate with cognitive aging and hormonal insufficiency; supplementation restores circulating levels without disrupting hypothalamic-pituitary-adrenal feedback when used appropriately.
Health Benefits*
- Cognitive function support
- Supports memory and learning
- Stress resilience through HPA axis
- Mood health
- Cellular detoxification
Dosing Reference
Practitioner Notes
Contraindicated in hormone-sensitive cancers (breast, prostate). Avoid in patients with uncontrolled hypertension or anxiety as neurosteroid activity may initially exacerbate symptoms. Monitor for downstream hormone effects (elevated DHEA, testosterone); periodic serum hormone panel assessment recommended. Discontinue if mood disturbances or sleep disruption occur.
DFH Products Featuring Pregnenolone
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Living microbial strains that restore gut microbiome diversity — supporting immune health, mucosal barrier integrity, and digestive function.
Mechanism of Action
Probiotic strains adhere to intestinal epithelial cells. They promote secretory IgA (sIgA) production in gut-associated lymphoid tissue (GALT), modulate regulatory T-cell (Treg) activity to promote immune tolerance, and produce short-chain fatty acids (SCFAs — butyrate, propionate, acetate) that nourish colonocytes and maintain tight junction protein expression. Bifidobacterium and Lactobacillus strains also produce B vitamins, secondary bile acids, and neurotransmitter precursors that participate in gut-brain axis signaling via the vagus nerve.
Health Benefits*
- Restores microbiome diversity disrupted by certain medications, stress, and poor diet
- Promotes sIgA and trains appropriate innate mucosal immune responses
- Produces SCFAs that nourish colonocytes and maintain gut barrier integrity
- Supports gut-brain communication and may help with mood and occasional anxious feelings
Dosing Reference
FAQ
- Spore-based vs. standard refrigerated probiotics — which is better?
- Spore-based probiotics (Bacillus species, ProbioSpore) survive GI transit without refrigeration and have demonstrated ability to temporarily colonize the gut and shift microbiome composition. Standard refrigerated Lactobacillus/Bifidobacterium strains are more researched for specific conditions. Both have clinical roles depending on the clinical context.
Practitioner Notes
FloraMyces (Saccharomyces boulardii) is a yeast-based probiotic. Avoid high-serving probiotics in severely immunocompromised patients — rare risk of translocation bacteremia.
DFH Products Featuring Probiotics
- Probiotic Supreme DF30B CFU · 7 clinically studied strains · Dairy-free · Shelf-stable · Daily maintenance formula · 60 vegetarian capsulesPROS60
- ProbioMed 100100B CFU per capsule · 7 multi-strain formula · RefrigeratedPBM100
- FloraMycesSaccharomyces boulardii 5B CFU per capsule · Yeast-based probioticFLM060
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A highly bioavailable stilbenoid offering superior cellular health support beyond resveratrol.
Mechanism of Action
Pterostilbene is a dimethylated stilbenoid analog of resveratrol with enhanced bioavailability (>80% vs. ~20% for resveratrol) due to increased lipophilicity and reduced glucuronidation. Pterostilbene helps support mitochondrial biogenesis, autophagy, and oxidative stress resistance. Additionally, pterostilbene acts as a potent aryl hydrocarbon receptor (AhR) agonist, supporting intestinal barrier integrity and promoting phase II detoxification enzymes.
Health Benefits*
- Cellular aging support
- Promotes mitochondrial function and ATP production
- Phase II detoxification enzyme upregulation
- Cardiovascular support
- Normal senescent cell clearance
Dosing Reference
Practitioner Notes
Transient mild gastrointestinal effects rare; often improve with food intake. Synergistic with NAD+ boosters (NMN, NR) and other sirtuin activators; however, avoid concurrent use with SIRT inhibitors. Consider periodic (weekly) off intervals to prevent potential tolerance development. Efficacy optimized when combined with caloric restriction or intermittent fasting protocols.
DFH Products Featuring Pterostilbene
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A potent flavonoid with broad immune supportive activity — quercetin helps stabilize mast cells, acts as a zinc ionophore, and supports normal histamine responses.
Mechanism of Action
Quercetin is a bioflavonoid found in onions, apples, and capers that exerts immune supportive effects through multiple pathways. It helps inhibit phosphodiesterase and phospholipase A2, stabilizing mast cell membranes and promoting normal histamine release. As a zinc ionophore, quercetin facilitates intracellular zinc transport.
Health Benefits*
- Stabilizes mast cells and promotes normal histamine response
- Supports cardiovascular health
- Support for healthy blood pressure already within the normal range
Dosing Reference
Practitioner Notes
Combine with bromelain (pineapple protease) to enhance quercetin intestinal absorption. Particularly valuable for mast cell activation and immune support. COMT inhibition: caution in patients on catechol-containing medications or high-serving thyroid medication. Quercetin phytosome (quercetin-phospholipid complex) offers significantly improved bioavailability vs. standard powder.
DFH Products Featuring Quercetin
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A naturally fermented source of monacolin K — red yeast rice provides support for healthy cholesterol metabolism.
Mechanism of Action
Red yeast rice (Monascus purpureus fermented on rice) contains a complex of monacolin compounds, principally monacolin K — which competitively helps inhibit the rate-limiting enzyme in the mevalonate pathway for cholesterol biosynthesis. Red yeast rice contains 13 monacolins plus co-occurring sterols, isoflavones, and unsaturated fatty acids that may contribute synergistic lipid-supportive effects.
Health Benefits*
- Provides broad monacolin complex
- Best for cardiovascular health when combined with CoQ10 supplementation
- Complementary to plant sterols for normal cholesterol metabolism support via different mechanisms
Dosing Reference
Practitioner Notes
Red yeast rice carries similar interactions to statin medications — CYP3A4 inhibitors (grapefruit, azole antifungals, macrolide antibiotics) increase monacolin K exposure and myopathy risk. Monitor liver enzymes and CPK, especially during the first 3 months. Contraindicated in liver disease, pregnancy, and breastfeeding. Mandatory co-supplementation with CoQ10 to offset mevalonate pathway depletion.
DFH Products Featuring Red Yeast Rice
- Red Yeast RiceTraditional fermented red yeast rice supplying naturally occurring monacolins · Supports healthy cholesterol & cardiovascular functionRYO180
- RYR Synergy™Red yeast rice combined with CoQ10 & synergistic botanicals · Cardiovascular support with built-in mevalonate pathway cofactorRYR120
- Lipotrienols RYR™Red yeast rice with tocotrienols · Dual-action lipid & antioxidant support for healthy cholesterol balanceLPT060
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A polyphenolic stilbene from grape skins and Japanese knotweed that supports endothelial NO production, and provides cardiovascular and healthy aging benefits.
Mechanism of Action
Trans-resveratrol (3,5,4'-trihydroxystilbene) activates SIRT1, a NAD+-dependent histone deacetylase that promotes mitochondrial biogenesis via PGC-1α, and supports autophagy. Resveratrol promotes endothelial nitric oxide synthase (eNOS) activity and NO bioavailability, supporting vasodilation and healthy blood pressure already in the normal range. Additionally, resveratrol helps activate AMPK — a master metabolic sensor — supporting healthy glucose metabolism and lipid homeostasis.
Health Benefits*
- Supports mitochondrial biogenesis and autophagy
- Promotes endothelial NO production for healthy blood flow and blood pressure
- Supports normal systemic inflammatory signaling
- Supports healthy glucose and lipid metabolism
Dosing Reference
Practitioner Notes
Trans-resveratrol is the bioactive isomer — cis-resveratrol has minimal activity. Bioavailability is limited by rapid glucuronidation and sulfation in the gut and liver (extensive first-pass metabolism). Despite low plasma levels, tissue distribution and metabolite activity appear clinically meaningful. Mild antiplatelet activity — exercise caution with anticoagulant/antiplatelet therapy. Resveratrol may act as a phytoestrogen at high servings — clinical relevance is debated.
DFH Products Featuring Resveratrol
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
An Arctic adaptogen with healthy energy and mental clarity benefits — Rhodiola helps balance stress hormones which may help support cognitive performance under pressure.
Mechanism of Action
Rhodiola rosea root extract contains rosavins and salidroside — the principal bioactive compounds. Salidroside helps support mood, motivation, and stress resilience. Rosavins support normal cortisol secretion patterns. Rhodiola also supports muscle glycogen preservation.
Health Benefits*
- Supports cognitive performance under stress
- Promotes normal cortisol secretion
- Supports mood health and stress adaptation
- Helps cellular stress adaptation and mitochondrial health
- Promotes glycogen conservation and lactate metabolism
Dosing Reference
Practitioner Notes
Rhodiola has mild MAO inhibitory properties — caution with tyramine-rich foods at high servings and absolute contraindication with MAOI antidepressants. Its energizing properties mean evening serving should be avoided. Most clinical evidence uses SHR-5 standardized extract (3% rosavins, 1% salidroside).
DFH Products Featuring Rhodiola
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A clinically studied botanical supporting positive mood and emotional well-being.
Mechanism of Action
Saffron stigma contains bioactive carotenoids—particularly crocin and safranal—that help support multiple neurotransmitter systems involved in mood regulation. Crocin supports serotonin metabolism. Safranal supports motivation, attention, and emotional resilience. Neurosupportive mechanisms include inhibition of monoamine oxidase (MAO) enzymes, healthy inflammatory response, and antioxidant scavenging of ROS.
Health Benefits*
- Mood and emotional health
- Motivation and attention support
- Neuroplasticity support
- Emotional resilience and stress adaptation
Dosing Reference
Practitioner Notes
Saffron should be used with caution in patients on serotonergic medications due to additive effects and potential serotonin syndrome risk (though rare at recommended servings). Monitor for serotonin toxicity signs (agitation, tremor, hyperthermia) when combining with serotonergic agents. Onset typically 14–28 days; counsel accordingly. Premium saffron extracts with guaranteed crocin content ensure consistency and efficacy. May cause mild dizziness initially; take with food to minimize GI upset.
DFH Products Featuring Saffron Extract
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The body's universal methyl donor supporting mood, joints, and liver detoxification pathways.
Mechanism of Action
S-adenosylmethionine (SAMe) is the universal methyl donor in all organisms, transferring methyl groups to >100 biochemical reactions governing neurotransmitter synthesis, phospholipid methylation, antioxidant production, and gene expression. In mood health, SAMe supports synthesis of serotonin, dopamine, and norepinephrine through methylation of monoamine precursors and neurotransmitter receptor upregulation. The compound also provides sulfhydryl groups for glutathione synthesis and polyamine production essential for cellular detoxification. In the liver, SAMe helps support phase II detoxification enzyme efficiency. Skeletal and cartilage tissues utilize SAMe for proteoglycan and collagen synthesis.
Health Benefits*
- Mood support
- Joint comfort and structural support from normal collagen synthesis
- Liver health and detoxification phase II support
Dosing Reference
Practitioner Notes
Do not use in bipolar disorder patients; may trigger manic episodes in predisposed individuals. Monitor for agitation or insomnia, particularly in sensitive patients; serving-related effects that diminish with continued use. Methylation-sensitive patients (MTHFR C677T homozygotes) may experience overmethylation symptoms; start at lower servings. Synergistic with folate and B12 cofactors; optimize these concurrently. SAMe interferes with certain drug assays (FPIA immunoassays); notify laboratories. Avoid in patients taking serotonergic medications; additive serotonin effects theoretically possible though clinically rare.
DFH Products Featuring SAMe
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A well-studied traditional botanical supporting healthy prostate and urinary flow.
Mechanism of Action
Saw palmetto (Serenoa repens) berry extract contains lipophilic compounds—primarily free fatty acids, phytosterols, and flavonoids—that help selectively inhibit the enzymes responsible for converting testosterone to its more potent metabolite dihydrotestosterone (DHT). The botanical also supports healthy inflammatory response, and androgen receptor signaling, resulting in normal prostate and urinary flow dynamics.
Health Benefits*
- Supports healthy prostate
- Promotes urinary flow rate and normal urinary urgency
- Supports bladder emptying
Dosing Reference
Practitioner Notes
Saw palmetto requires 4–8 weeks of consistent use to manifest benefit; counsel patients appropriately regarding timeline. Extract standardization is critical; recommend products standardized to 85–95% fatty acids. Monitor baseline PSA before initiation and periodically during treatment. May interact with certain pharmaceuticals (finasteride, dutasteride). Well-tolerated with minimal adverse effects; occasional mild GI upset. Safe in long-term use without tolerance development.
DFH Products Featuring Saw Palmetto
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A South African botanical commonly used for mood and cognitive support.*
Mechanism of Action
Sceletium tortuosum (kanna) is a succulent plant native to South Africa that contains potent alkaloids—primarily mesembrine, mesembrenone, and related analogs—that modulate monoaminergic and phosphodiesterase signaling. The primary mechanism involves support for the inhibition of a transcription factor essential for neuroplasticity, learning, and mood regulation.*
Health Benefits*
- Supports serotonin metabolism
- Promotes positive mood and may help with occasional anxiety
- Promotes cognitive function, focus, and mental clarity
- Helps support neuroplasticity
Dosing Reference
Practitioner Notes
Extract standardization and alkaloid profile vary significantly among vendors; select products with documented mesembrine content (>5%). May interact with SSRI or other serotonergic medications; use caution and monitor for serotonin syndrome in combination therapy. Avoid in patients taking MAO inhibitors. Tolerance development is rare in long-term use. Typically well-tolerated; occasional mild headache or dizziness during initial weeks. Onset of benefits typically 2–4 weeks; counsel patients appropriately regarding timeline for full efficacy.
DFH Products Featuring Sceletium tortuosum (Kanna)
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
An essential trace mineral that powers glutathione peroxidase antioxidant defense, enables thyroid hormone conversion (T4→T3), and supports immune cell proliferation.
Mechanism of Action
Selenium is incorporated as selenocysteine (the 21st amino acid) into at least 25 human selenoproteins. Glutathione peroxidases (GPx1–6) reduce hydrogen peroxide and lipid hydroperoxides, supporting cell membranes. Iodothyronine deiodinases (DIO1–3) convert T4→T3 (activation) and T4→rT3 (inactivation), making selenium essential for thyroid hormone metabolism. Selenoprotein P serves as the primary plasma selenium transport protein and provides antioxidant support in the vascular endothelium.
Health Benefits*
- Powers glutathione peroxidase system
- Essential for thyroid hormone conversion
- Supports immune cell proliferation and balanced inflammatory response
- Supports male reproductive health and sperm motility
Dosing Reference
Practitioner Notes
Selenium has a narrow consumption window — beneficial at 100–200mcg but potentially toxic above 400mcg/day (selenosis: garlic breath, hair loss, nail brittleness, GI distress, peripheral neuropathy). SelenoExcell® high-selenium yeast provides selenium in the same organic selenomethionine form found in food, with superior bioavailability vs. inorganic sodium selenite. Always assess dietary selenium intake before supplementing. Brazil nuts can provide 70–90mcg per nut — variable by soil. Critical co-nutrient with iodine for thyroid health — deficiency in either impairs thyroid function.
DFH Products Featuring Selenium
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Targeted compounds that support the body's clearance of senescent cells for healthy aging.
Mechanism of Action
Senolytic compounds selectively induce apoptosis in senescent cells—post-mitotic cells that have exited the cell cycle yet persist in tissues, accumulating with age. Established senolytics including quercetin, fisetin, and dasatinib target senescent cell survival pathways by inhibiting anti-apoptotic proteins (BCL-2, BCL-xL) while maintaining normal cell viability. Quercetin and fisetin act through tyrosine kinase inhibition and FOXO4 disruption, destabilizing senescent cell survival signaling. Plant-based senolytic combinations achieve senescent clearance through multiple complementary mechanisms. Periodic senolytic administration (typically monthly or quarterly) may help support cardiovascular, renal, and neurological systems.
Health Benefits*
- Senescent cell clearance
- Healthy cardiovascular and endothelial function support
- Physical function and mobility support through muscle tissue support
- Comprehensive healthy aging support through cellular quality control enhancement
Dosing Reference
Practitioner Notes
Senolytic compounds are generally well-tolerated with minimal adverse effects; GI sensitivity possible with high-serving flavonoid intake. Periodic cycling (5 days per month or quarterly intensive weeks) shows superior efficacy compared to continuous intake, potentially due to compensatory senescent cell proliferation during continuous exposure. Adequate hydration required. Avoid in patients with thrombocytopenia or bleeding disorders (quercetin platelet effects). Do not use in patients with cancer or high risk of cancer. Synergistic with autophagy-promoting interventions (fasting, exercise, spermidine).
DFH Products Featuring Senolytic Compounds
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Omega-3-derived lipid mediators that support the body's inflammatory response resolution.
Mechanism of Action
Specialized pro-resolving mediators (SPMs)—including lipoxins, resolvins, protectins, and lipoxins—are endogenous eicosanoid metabolites synthesized from eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) through coordinated cytochrome P450 and lipoxygenase pathways. SPMs simultaneously promote macrophage polarization toward resolution-phase (M2) phenotype, supporting the body's normal tissue repair processes and promoting termination of acute inflammatory programs.
Health Benefits*
- Active inflammatory resolution through pro-resolving mediator restoration
- Supports the body's normal tissue repair and remodeling processes
- Neurosupportive
Dosing Reference
Practitioner Notes
SPM formulations derived from concentrated fish oil designed to maximize EPA/DHA availability for endogenous SPM synthesis. Excellent safety profile; minimal adverse effects beyond occasional mild GI upset and transient fishy aftertaste. Monitor omega-3 index (should exceed 8%) to ensure adequate substrate availability. Synergistic with vitamin D, curcumin, and resveratrol for optimal resolution signaling. Avoid in patients with severe bleeding disorders or on anticoagulation medication; mild antiplatelet effects documented. Benefits enhanced by concurrent lifestyle modifications (exercise, sleep, stress management) supporting endogenous SPM production.
DFH Products Featuring SPMs (Specialized Pro-Resolving Mediators)
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A potent cruciferous compound that activates the body's Nrf2 detoxification pathway.
Mechanism of Action
Sulforaphane is an isothiocyanate derived from glucoraphanin (a glucosinolate) in cruciferous vegetables, released upon cell disruption through myrosinase enzyme action. Sulforaphane acts as a potent electrophile, covalently binding and inhibiting Kelch-like ECH-associated protein 1 (KEAP1), a negative regulator of NRF2 (nuclear factor erythroid 2–related factor 2). Bioavailability enhanced through myrosinase-intact preparations or synthetic sulforaphane glucosinolate with stabilized forms.
Health Benefits*
- Phase II detoxification enzyme upregulation supporting clearance
- Antioxidant system support
- Cardiovascular metabolic support through lipid and glucose homeostasis
Dosing Reference
Practitioner Notes
Sulforaphane derived from broccoli sprout extracts or standardized glucosinolate precursors ensures consistent potency. Myrosinase-intact preparations require enzyme activity verification for optimal bioavailability. Generally well-tolerated; transient gastrointestinal effects (sulfurous flavor, mild bloating) manageable through food co-administration and gradual serving titration. NRF2 activation may enhance detoxification of certain medications; monitor drug efficacy with concurrent sulforaphane use. Synergistic with other phase II inducers (curcumin, silymarin) for comprehensive detoxification support.
DFH Products Featuring Sulforaphane
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A conditionally essential amino acid critical for bile acid conjugation, cardiac contractility, osmoregulation, GABA-ergic neuromodulation, and cellular antioxidant support across virtually every organ system.
Mechanism of Action
Taurine is the most abundant free amino acid in excitable tissues — heart, brain, retina, and skeletal muscle. It stabilizes cell membranes through osmoregulation, modulates intracellular calcium homeostasis in cardiomyocytes, conjugates bile acids (taurocholate) for lipid digestion and cholesterol excretion, and directly scavenges hypochlorous acid and other reactive oxygen species. Taurine is synthesized endogenously from cysteine via cysteine sulfinic acid decarboxylase, but synthesis capacity is limited — particularly in the elderly, and individuals under metabolic stress.
Health Benefits*
- Supports normal cardiac contractility
- Promotes healthy bile acid conjugation for lipid digestion and cholesterol excretion
- Supports retinal photoreceptor health and visual function
- Supports cellular osmoregulation and membrane stability under metabolic stress
Dosing Reference
Practitioner Notes
Taurine is often depleted in individuals on long-term beta-blockers, those with heart failure, vegetarians/vegans (taurine is found primarily in animal-source foods), and patients with liver disease impairing bile acid conjugation. Well-tolerated at servings up to 3g/day with minimal adverse effects. May potentiate the effects of anti-hypertensive medications, use caution. Zinc Supreme provides 400mg taurine alongside chelated zinc for synergistic mineral absorption support.
DFH Products Featuring Taurine
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
An Ayurvedic fruit extract that inhibits xanthine oxidase for healthy uric acid levels and joint comfort.
Mechanism of Action
Terminalia bellerica fruit extract contains potent polyphenolic compounds—particularly ellagic acid, tannic acids, and gallic acid esters—that function as non-competitive inhibitors of xanthine oxidase (XO), the key enzyme in the catabolism of purines to uric acid. By inhibiting this enzymatic pathway, Terminalia bellerica reduces the rate of uric acid production from dietary purine sources and endogenous nucleic acid metabolism. The botanical's polyphenolic content also provides powerful antioxidant activity through multiple mechanisms including NFKB pathway inhibition and scavenging of superoxide radicals generated during purine metabolism.
Health Benefits*
- Inhibits xanthine oxidase and uric acid production
- Supports healthy serum uric acid
Dosing Reference
Practitioner Notes
Terminalia bellerica works synergistically with dietary purine restriction and adequate hydration; education on both is essential. May potentiate allopurinol or febuxostat; avoid combination therapy without monitoring serum uric acid. Safe in long-term use; typically well-tolerated with minimal adverse effects. Extract standardization to polyphenol content (typically 30–40% total polyphenols) ensures reliable efficacy. Benefits appear within 2–4 weeks but persist with continued use. Monitor baseline uric acid and periodically.
DFH Products Featuring Terminalia bellerica
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A multinutrient matrix supporting thyroid hormone synthesis, T4→T3 conversion, and HPT axis balance — addressing the complete nutritional ecology of thyroid function.
Mechanism of Action
Optimal thyroid function requires a cascade of micronutrient cofactors: iodine (T3/T4 substrate), tyrosine (amino acid backbone of thyroglobulin), selenium (selenoprotein deiodinase enzymes for T4→T3 peripheral conversion — the most clinically relevant step), zinc (5'-deiodinase activity), iron (thyroid peroxidase heme cofactor — deficiency directly impairs T4 synthesis), and vitamin A (thyroid hormone receptor expression).
Health Benefits*
- Provides all essential cofactors for thyroid hormone synthesis and activation
- Selenium supports selenoprotein deiodinases required for T4→T3 conversion
- Supports basal metabolic rate, energy, mood, and cognitive function
- Addresses common subclinical nutritional bottlenecks
Dosing Reference
Practitioner Notes
Nutritional thyroid support complements but does not replace thyroid hormone replacement therapy when clinically indicated. Run a comprehensive thyroid panel before and after 3 months. In Graves' disease, stimulatory botanicals (ashwagandha, guggul) should be avoided. Selenium (200mcg/day) has the strongest evidence for benefit.
DFH Products Featuring Thyroid Support
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The most biologically potent vitamin E forms — tocotrienols provide superior lipid membrane antioxidant protection with unique cardiovascular, neurosupportive, and skin barrier benefits beyond tocopherols.
Mechanism of Action
Vitamin E comprises four tocopherols (α, β, γ, δ) and four tocotrienols (α, β, γ, δ) — all sharing a chromanol ring but differing in their phytyl side chain (saturated in tocopherols; unsaturated with three double bonds in tocotrienols). The unsaturated side chain of tocotrienols allows faster membrane mobility and recycling kinetics — providing 40–60× more potent lipid peroxidation inhibition vs. alpha-tocopherol in membranes. Delta- and gamma-tocotrienols (from annatto — Bixa orellana, the only tocopherol-free natural source) demonstrate the greatest benefit.
Health Benefits*
- Superior membrane lipid peroxidation support vs. tocopherols
- Supports healthy cholesterol levels already within the normal range
- Neurosupportive
- Supports skin lipid barrier integrity
- Normal inflammatory response
Dosing Reference
FAQ
- Why avoid alpha-tocopherol with tocotrienols?
- Alpha-tocopherol competes with tocotrienols for hepatic α-tocopherol transfer protein binding and intestinal absorption via shared transporters. High-serving alpha-tocopherol supplements can reduce plasma tocotrienol levels by 50–75%. Use annatto-derived tocotrienols (tocopherol-free) and avoid multi-vitamin products with high alpha-tocopherol content when tocotrienols are prescribed.
Practitioner Notes
Annatto (Bixa orellana) seed extract is the only tocopherol-free tocotrienol source — ideal for avoiding the alpha-tocopherol competition problem. Mild antiplatelet activity — monitor in patients on anticoagulant therapy. Must be taken with fat for adequate absorption. DeltaGold® tocotrienol (from annatto) provides the highest delta-tocotrienol content.
DFH Products Featuring Tocotrienols / Vitamin E
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A botanical that supports healthy libido, sexual function, and hormonal signaling in both men and women.
Mechanism of Action
Tribulus terrestris fruit extract is rich in steroidal saponins, with protodioscin being the primary active constituent. Protodioscin and related saponins serve as ligands for estrogen and androgen receptors, modulating hormonal signaling in the hypothalamic-pituitary-gonadal (HPG) axis and peripheral reproductive tissues. The botanical also promotes nitric oxide signaling supporting vasodilation. Additionally, Tribulus supports dopamine and serotonin pathway effects that enhance sexual motivation and arousal across sexes.
Health Benefits*
- Supports healthy libido and sexual desire in men and women
- Promotes erectile function and sexual arousal
- Supports healthy testosterone production in males
- Promotes vaginal lubrication and sexual satisfaction in females
- Promotes NO-mediated vasodilation in reproductive tissues
Dosing Reference
Practitioner Notes
Extract standardization to protodioscin content (25–45% is typical) is critical for reliable efficacy; generic leaf extracts are substantially less potent than fruit extracts. Tribulus exhibits synergy with other sexual health botanicals (ginseng, maca, L-arginine); combining may enhance outcomes. Not recommended in patients with hormone-sensitive conditions without appropriate medical supervision. Generally well-tolerated; occasional mild GI upset or headache. Benefits typically manifest within 4–6 weeks of consistent use. Long-term use does not induce tolerance or dependency.
DFH Products Featuring Tribulus terrestris
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Direct-delivery butyrate fuel for colonocytes, supporting gut barrier and microbial health.
Mechanism of Action
Tributyrin is a triglyceride form of butyrate—a short-chain fatty acid (SCFA) postbiotic metabolite—designed for protected delivery to the distal colon while providing rapid systemic butyrate bioavailability. Upon ingestion, tributyrin undergoes rapid esterase-mediated hydrolysis in the small intestine, releasing free butyrate for direct colonocyte uptake as primary fuel source (preferred to glucose for epithelial energy metabolism). Short-chain fatty acid repletion also supports beneficial Faecalibacterium and Roseburia species while inhibiting pathogenic Proteobacteria overgrowth.
Health Benefits*
- Gut barrier integrity
- Intestinal epithelial health
- Support of beneficial SCFA-producing bacteria
- Systemic metabolic health
- Digestive comfort and regular bowel function
Dosing Reference
Practitioner Notes
Tributyrin provides superior tolerability compared to free butyrate salts which cause diarrhea and GI distress. Mild transient increases in bloating or gas possible during dysbiosis correction due to bacterial metabolic shifts. Avoid in patients with acute inflammatory bowel disease (fecal SCFA production elevated). Monitor stool consistency as indicator of optimal dosing; soft, well-formed stools represent appropriate butyrate availability. Synergistic with prebiotic fiber, polyphenol-rich foods, and probiotic species (Faecalibacterium prausnitzii, Akkermansia muciniphila) supporting sustained barrier improvement.
DFH Products Featuring Tributyrin / Butyrate
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The pro-differentiation vitamin — vitamin A governs epithelial cell renewal, sebaceous gland activity, mucosal immune responses, and collagen synthesis.
Mechanism of Action
All-trans retinoic acid (the active form of vitamin A) binds retinoic acid receptors (RAR-α, β, γ) and retinoid X receptors (RXR) — nuclear transcription factors that form heterodimers and bind retinoic acid response elements (RAREs) in target gene promoters. This regulates cell differentiation, proliferation, and apoptosis across all epithelial tissues. In skin, RAR-γ activation normalizes keratinocyte differentiation (reducing hyperkeratosis), downregulates sebaceous gland lipid synthesis (reducing acne-associated sebum), and promotes fibroblast collagen I and III synthesis. Vitamin A is also essential for rhodopsin synthesis (night vision) and secretory IgA production at mucosal surfaces.
Health Benefits*
- Promotes normal sebaceous gland activity and sebum production
- Promotes collagen synthesis — supporting skin firmness and reduces fine lines
- Supports secretory IgA production at mucosal surfaces
- Essential for rhodopsin synthesis — night vision and retinal photoreceptor health
- Supports normal wound healing and accelerates epithelial tissue repair
Dosing Reference
Practitioner Notes
Preformed vitamin A (retinol/retinyl palmitate) is teratogenic at high servings — strictly contraindicated above 5,000 IU/day in pregnancy; beta-carotene (provitamin A) does not carry this risk. Liver disease significantly impairs retinol clearance — monitor for toxicity at lower servings. Hypervitaminosis A presents with headache, hepatotoxicity, bone pain, and desquamation. Assess status before supplementing high servings — serum retinol and retinol-binding protein are useful markers. Combine with zinc — zinc is required for retinol-binding protein synthesis and retinol mobilization from liver stores.
DFH Products Featuring Vitamin A / Retinol
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
An essential water-soluble antioxidant and immune architect — vitamin C fuels leukocyte function, drives collagen hydroxylation, and supports adrenal stress response.
Mechanism of Action
Ascorbic acid is a potent water-soluble antioxidant that regenerates oxidized vitamin E in membranes and maintains intracellular glutathione pools. It accumulates in immune cells (neutrophils, lymphocytes) at concentrations 10–100× above plasma, where it supports neutrophil chemotaxis, phagocytosis, and oxidative burst. As an enzymatic cofactor, it is absolutely required for lysyl and prolyl hydroxylase activity — the enzymes responsible for collagen cross-linking — and for dopamine β-hydroxylase (norepinephrine synthesis) and carnitine biosynthesis.
Health Benefits*
- Promotes neutrophil, NK cell, and lymphocyte function
- Regenerates glutathione and vitamin E — maintains systemic antioxidant network
- Essential cofactor for collagen synthesis — skin, connective tissue, and wound healing
- Supports adrenal cortex function — highest concentration of any tissue in the adrenal gland
- Promotes non-heme iron absorption when taken with iron-containing meals
Dosing Reference
Practitioner Notes
Liposomal vitamin C achieves plasma levels approaching IV dosing without GI side effects. Buffered forms (calcium or magnesium ascorbate) are better tolerated in GI-sensitive patients. Divided servings throughout the day maintains steadier plasma levels — ascorbic acid has a short half-life (~2 hours). Very high servings (>2g/day) may increase urinary oxalate — caution in patients with recurrent calcium oxalate kidney stones.
DFH Products Featuring Vitamin C
- Stellar C1,000mg vitamin C with bioflavonoids, quercetin & hesperidin · Enhanced bioavailability · Immune & vascular formulaSTC090
- Liposomal Vitamin C1,000mg liposomal ascorbic acid per 2 softgels · Superior plasma levels vs. standard oral · No GI side effectsLPOVTC
- Buffered Vitamin CCalcium & magnesium ascorbate · GI-gentle buffered form · 1,000mg per 2 capsules · Ideal for sensitive stomachsVCB240
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The sunshine prohormone — a master regulator of over 200 genes governing immune function, calcium homeostasis, cell differentiation, and mood stability.
Mechanism of Action
After hydroxylation to 25-hydroxyvitamin D in the liver and then to 1,25-dihydroxyvitamin D (calcitriol) in the kidney, calcitriol binds the vitamin D receptor (VDR) — a nuclear transcription factor expressed in virtually every human cell. This VDR-calcitriol complex regulates transcription of over 200 target genes involved in calcium and phosphorus absorption, innate and adaptive immune function, cell cycle control, and neurotransmitter synthesis.
Health Benefits*
- Essential for intestinal calcium absorption — supports healthy bone mineralization
- Supports immune health
- Supports mood health and balance
- Supports normal insulin function
- Promotes cardiovascular health, normal blood pressure and arterial tone
Dosing Reference
FAQ
- Should vitamin D always be taken with vitamin K2?
- Yes — vitamin K2 (MK-7 form) activates osteocalcin and matrix Gla protein, directing calcium into bone and away from soft tissue calcification. High-serving vitamin D supplementation without adequate K2 may accelerate arterial and renal calcification.
Practitioner Notes
Test 25-OH-D before supplementing and retest after 3 months to guide serving. Serum calcium should be monitored with servings above 10,000 IU/day. Vitamin D toxicity is rare but presents with hypercalcemia — distinguish from toxicity vs. adequate supplementation. Emulsified forms (Hi-Po Emulsi-D3) are preferred for patients with fat malabsorption (IBD, cystic fibrosis, cholestasis).
DFH Products Featuring Vitamin D3
- Vitamin D Supreme5,000 IU D3 + 180mcg K2 (MK-7) per capsule · D+K synergy formula · Bone & vascular healthVDS180
- Vitamin D Synergy1,000 IU D3 + 200mcg K1 + 45mcg K2 per capsule · Lower-serving maintenance formula · Daily immune supportVID120
- Hi-Po Emulsi-D32,000 IU per drop · Emulsified liquid D3 · Superior absorption for fat malabsorption conditions · Flexible dosingEMD1OZ
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
The essential calcium-directing vitamins — K1 activates coagulation factors while K2 (MK-4 and MK-7) channels calcium into bones and out of arterial walls for dual skeletal and cardiovascular support.
Mechanism of Action
Vitamin K serves as a cofactor for gamma-glutamyl carboxylase, which activates vitamin K-dependent proteins. K1 (phylloquinone) primarily activates hepatic coagulation factors (II, VII, IX, X). K2 (menaquinones — MK-4 and MK-7) activates extra-hepatic proteins: osteocalcin (directing calcium into bone matrix) and matrix Gla protein (MGP — preventing vascular calcification). MK-4 has a short half-life (~6 hours) requiring multiple daily servings, while MK-7 has a long half-life (~72 hours) enabling once-daily serving with sustained carboxylation of both osteocalcin and MGP.
Health Benefits*
- Activates osteocalcin for calcium deposition into bone matrix
- Activates matrix Gla protein (MGP) to inhibit arterial calcification
- Supports healthy blood coagulation through hepatic factor activation (K1)
- Synergizes with vitamin D3 for optimal calcium metabolism and bone health
- Supports dental health through carboxylation of dentin matrix proteins
Dosing Reference
Practitioner Notes
Critical interaction: vitamin K directly antagonizes warfarin (a vitamin K epoxide reductase inhibitor). Patients on warfarin must maintain consistent K intake — do not supplement without physician coordination. However, K2 supplementation is appropriate and important for patients NOT on warfarin who are taking high-serving vitamin D3, calcium, or bisphosphonates. DFH Tri-K provides all three forms (K1, MK-4, MK-7) for comprehensive coverage. Always pair vitamin D supplementation with adequate K2 to prevent soft tissue calcification.
DFH Products Featuring Vitamin K (K1 + K2)
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A complete protein from grass-fed dairy with the highest biological value of any natural protein source — rich in leucine for muscle protein synthesis, cysteine for glutathione production, and immunoglobulins for immune support.
Mechanism of Action
Whey protein provides all essential amino acids in high concentrations, with a particularly elevated leucine content (~10–12% by weight). Leucine is the key activator of mTORC1 (mechanistic target of rapamycin complex 1) signaling — the master regulator of muscle protein synthesis. Whey's rapid digestion kinetics produce a sharp leucine spike that maximally promotes mTOR-mediated translation initiation. Whey is also the richest natural dietary source of cysteine, providing the rate-limiting amino acid for endogenous glutathione synthesis. Native whey protein concentrates retain immunoglobulin fractions (IgG, IgA), lactoferrin, and glycomacropeptide — bioactive peptides that support immune and GI health.
Health Benefits*
- Highest biological value protein — provides all essential amino acids for muscle protein synthesis
- Cysteine — supports endogenous glutathione production
- Supports post-meal satiety and healthy weight management
- Supports healthy blood sugar metabolism
Dosing Reference
Practitioner Notes
DFH whey products (WheyCool, WheyMeal) use native whey concentrate from New Zealand grass-fed cows — never grain-fed, no added hormones or antibiotics. Native processing (low-temperature) preserves immune-active fractions that are destroyed in standard high-heat whey processing. Instantized with sunflower lecithin (soy-free). Contraindicated in milk protein allergy (not the same as lactose intolerance). For dairy-free patients, consider PurePaleo Protein (beef) or VegeMeal (pea protein) as alternatives. WheyMeal adds methylated B vitamins, chelated minerals, and glucomannan fiber for a complete meal supplement.
DFH Products Featuring Whey Protein
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
An essential trace mineral and master immune regulator — zinc governs thymic T-cell development, immune support, and the activity of over 300 enzymes.
Mechanism of Action
Zinc is a structural component and catalytic cofactor in over 300 enzymes and participates in transcriptional regulation of more than 2,000 proteins. In the immune system, zinc is essential for thymulin production — the thymic hormone governing T-lymphocyte maturation and proliferation. Zinc is also required for superoxide dismutase (Cu/Zn-SOD) antioxidant activity, insulin synthesis and storage, and testosterone production.
Health Benefits*
- Regulates T-lymphocyte and NK cell maturation and function
- Supports Cu/Zn-SOD antioxidant enzyme activity for oxidative protection
- Essential for wound healing, skin barrier integrity, and collagen cross-linking
- Maintains taste and smell acuity — deficiency causes anosmia and hypogeusia
- Supports testosterone synthesis and male reproductive health
Dosing Reference
FAQ
- Why balance zinc with copper?
- Long-term zinc supplementation above 40mg/day can deplete copper through shared intestinal transporter (metallothionein) competition. If using intensive servings for more than 4 weeks, include 1–2mg copper daily.
Practitioner Notes
Zinc bisglycinate is the most bioavailable and GI-tolerated chelated form. Zinc picolinate is also well-absorbed. Avoid zinc oxide — negligible bioavailability. Take zinc away from calcium, iron, and phytate-rich foods (all compete for absorption). Monitor copper and alkaline phosphatase (zinc-dependent enzyme) in patients on extended supplementation.
DFH Products Featuring Zinc
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.