Immune Function (alias)
Cellular immunity.
Ranked by evidence strength across reported benefits.
Vitamin D3
Steroid hormone precursor regulating ~5% of the human genome — bone, immune, and hormonal health.
N-Acetyl Cysteine (NAC)
Glutathione precursor with mucolytic, hepatoprotective, and psychiatric uses.
Vitamin A (Retinol)
Fat-soluble vitamin essential for vision, immune function, and epithelial integrity.
Vitamin C
Water-soluble antioxidant, collagen cofactor, and immune supporter.
Garlic
Culinary bulb with cardiovascular benefits primarily via allicin and aged-garlic compounds.
Lactobacillus Probiotics
Lactic acid bacteria supporting gut barrier, immunity, and women's urogenital health.
Beta-Glucan
Polysaccharide that primes innate immune cells (yeast) or lowers cholesterol (oat).
Multi-Strain Probiotic
Live bacterial supplement — strain-specific effects on digestion, immunity, and mood.
Vitamin D3 (Cholecalciferol)
Preferred form for raising 25(OH)D — the active form your skin makes from sun.
Aged Garlic Extract (Kyolic)
Odorless aged garlic with S-allyl-cysteine for vascular health.
Turkey Tail
Beta-glucan-rich mushroom used as immune adjunct in cancer (PSK approved in Japan).
Saccharomyces Boulardii
Beneficial yeast used to prevent and treat several types of diarrhea.
Andrographis
Bitter herb with strong RCT evidence for URI symptom reduction.
Lactobacillus Rhamnosus GG
Most-studied single strain — atopy, pediatric diarrhea, and antibiotic recovery.
Zinc Gluconate
Most common over-the-counter zinc form — affordable, moderate bioavailability.
Andrographis (KalmCold)
Standardized andrographolide for acute upper respiratory infections.
Pelargonium sidoides (Umckaloabo)
South African geranium root for acute bronchitis and URIs.
Vitamin D3 (Maintenance)
Daily maintenance dose for non-deficient adults.
Vitamin D3 (Repletion)
Repletion dose for deficiency under medical supervision.
Selenium-Enriched Yeast
Yeast-bound selenomethionine — form used in major chemoprevention trials.
Zinc
Cofactor for ~300 enzymes — critical for testosterone, immune function, and DNA synthesis.
L-Glutamine
Most abundant amino acid; primary fuel for enterocytes and immune cells.
American Ginseng
Cooler adaptogen with stronger evidence for blood sugar and cold-flu prevention.
Licorice Root
Adrenal-supporting herb; chronic high-dose causes pseudo-aldosteronism.
Bovine Colostrum
First milk rich in IgG, lactoferrin, and growth factors for immune and gut support.
Lactoferrin
Iron-binding protein with antimicrobial and immunomodulating effects.
Reishi
Adaptogenic mushroom used for immune balance, sleep, and stress.
Quercetin
Flavonoid with antihistamine and senolytic effects; pairs with bromelain or vitamin C.
Spirulina
Blue-green algae — protein-rich with phycocyanin antioxidant and immune effects.
Selenium
Trace mineral essential for glutathione peroxidase and thyroid hormone activation.
Cordyceps
Medicinal fungus studied for aerobic capacity and immune modulation.
Shiitake (Lentinan)
Culinary mushroom whose beta-glucan lentinan is an approved injectable immune adjunct.
Olive Leaf Extract
Mediterranean herb with antihypertensive and immune effects.
Bifidobacterium Probiotics
Dominant probiotic genus in the colon; supports immune and gut barrier.
Elderberry
Anthocyanin-rich berry used to shorten influenza and URI symptoms.
Echinacea
Native American herb used for URI prevention/duration reduction.
Cranberry
Berry with PACs that inhibit E. coli adhesion to urothelium for UTI prevention.
Aged Garlic Extract (Kyolic)
Standardized aged garlic — modest BP and cholesterol benefits.
Elderberry (Sambucus)
Anthocyanin-rich berry — modest evidence for shortening flu and cold duration.
Echinacea Purpurea
Traditional immune herb — modest evidence for cold prevention.
Andrographis Paniculata
Bitter herb with strong evidence for cold symptom reduction.
Beta-Glucan (1,3/1,6)
Yeast/mushroom polysaccharide — primes innate immunity (trained immunity).
Vitamin C (Immune Use)
High-dose vit C at symptom onset — modestly shortens cold duration.
Zinc (Immune Use)
Lozenges started within 24h of symptom onset shorten colds ~33%.
Zinc Acetate
Lozenge form shown to shorten cold duration when used at first symptoms.
Agaricus blazei
Brazilian mushroom rich in β-glucans for immune modulation.
Maitake D-Fraction
Standardized β-glucan from Grifola frondosa for immune support.
Spirulina (Extra Profile)
Cyanobacterium with phycocyanin for allergy and immunity.
Zinc Bisglycinate (High-Bio)
Chelated zinc with superior absorption and tolerability.
Butterbur
Petasites hybridus extract for migraine prophylaxis and allergic rhinitis.
Cat's Claw
Uncaria tomentosa for joint pain and immunity.
Agaricus Blazei
Brazilian sun mushroom for immune support.
Phellinus Linteus
Meshima mushroom with hispolon for immune support.
PEA (Palmitoylethanolamide)
Endogenous fatty acid amide for pain and inflammation.
L-Lysine
Essential amino acid for collagen and HSV prevention.
Selenium (Selenomethionine)
Antioxidant trace element for thyroid.
Quercetin Phytosome
Lecithin-complexed quercetin.
Quercetin + Bromelain
Anti-inflammatory pair for allergies.
Stinging Nettle Leaf
Urtica dioica leaf for allergies and joint pain.
Isoquercetin
Highly bioavailable quercetin glycoside.
Luteolin
Flavone with anti-inflammatory effects.
Baicalin
Scutellaria baicalensis flavonoid.
Pelargonium Sidoides
South African geranium for bronchitis.
EPs 7630
Standardized Pelargonium extract.
Echinacea Purpurea
Coneflower for upper respiratory infections.
Echinacea Angustifolia
Narrow-leaf coneflower for immune support.
Lion's Mane Fruiting Body
Hericinones-rich beta-glucan source.
Agarikon (Fomitopsis officinalis)
Antiviral polypore mushroom.
Poria Cocos
TCM mushroom for sleep and immunity.
Oyster Mushroom
Pleurotus ostreatus with ergothioneine.
Butterbur Ze 339
PA-free butterbur for allergic rhinitis.
Marshmallow Root
Althaea officinalis mucilage for cough.
Cranberry Extract
Vaccinium macrocarpon for UTI prevention.
Olive Leaf (Standardized Oleuropein)
High-oleuropein extract.
Lauric Acid
Coconut MCFA with antimicrobial activity.
Black Seed Oil (Nigella sativa)
Thymoquinone for immune and metabolic health.
Thymoquinone
Active black seed compound.
Propolis
Bee glue with caffeic acid phenethyl ester.
Bee Pollen
Pollen collected by bees.
Manuka Honey
Leptospermum honey with MGO.
Bromelain
Pineapple proteolytic enzyme.
Ginger Extract (Zingiber)
Standardized ginger for nausea and inflammation.
Galangal (Alpinia)
Thai ginger relative for inflammation.
Holy Basil (Tulsi)
Ocimum sanctum adaptogen.
Holy Basil Eugenol
Active constituent of tulsi.
Liposomal Vitamin C
Phospholipid-encapsulated vitamin C.
Ascorbyl Palmitate
Fat-soluble vitamin C ester.
Sodium Ascorbate
Buffered vitamin C form.
Bovine Colostrum
First milk with growth factors.
Chlorella
Green algae with chlorophyll.
Amla (Indian Gooseberry)
Phyllanthus emblica vitamin C source.
Black Cumin Seed Oil
Nigella sativa oil.
Eleuthero
Adaptogen used to support stamina, immune function, and stress resilience.
Quercetin
Flavonoid with antihistamine, anti-viral, and senolytic activity.
Chaga
Birch-tree mushroom rich in melanin, betulin, and antioxidants.
Monolaurin
Coconut-derived monoglyceride with antimicrobial properties against enveloped viruses.
Vitamin C (Harm-Reduction Antioxidant)
Water-soluble antioxidant — quenches dopamine quinone and other reactive metabolites.
Oil of Oregano
Carvacrol-rich essential oil with broad antimicrobial activity (in vitro).
Astragalus
TCM tonic with immune-stimulating and CKD-supportive evidence.
Zinc Picolinate
Zinc chelated to picolinic acid — one of the most bioavailable oral forms.
Zinc Bisglycinate
Glycine-chelated zinc — high absorption and very gentle on the stomach.
Liposomal Glutathione
Phospholipid-encapsulated GSH — protects from gut breakdown for systemic delivery.
Chinese Skullcap
Flavonoid-rich root used for anxiety and inflammation.
Thymulin (Reference)
Zinc-dependent thymic peptide that matures T-cells.
Calcium AEP (Membrane Calcium)
Cell-membrane-targeted form of calcium claimed for autoimmune support.