Clear answers before you buy
Health facts and supplement guides, in plain English.
FactoWiki explains what's actually in a supplement, what the research does and doesn't support, what it costs, and who should be careful — so you're not relying on a sales page to make a health decision.
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What FactoWiki does
Evidence first
We summarise what published research actually shows about each ingredient — including its limits — and link the sources.
Ingredient wiki
Plain-English guides to how common supplement ingredients work, the doses studied, and who should be cautious.
Honest product guides
What the vendor claims versus what the evidence supports, with pricing, safety and alternatives laid out clearly.
Safety forward
Clear notes on interactions and who should avoid a product — and a reminder to talk to a doctor first.
Supplement categories
Categories with a link have guides now; the rest are being added.
Ingredient Wiki
Berberine
Berberine is a plant compound studied mainly for blood sugar, cholesterol and related meta…
IngredientAlpha-Lipoic Acid (ALA)
Alpha-lipoic acid is an antioxidant with genuine randomised-trial evidence for easing the …
IngredientBenfotiamine
Benfotiamine is a fat-soluble form of vitamin B1 (thiamine) that is absorbed far better th…
IngredientVitamin B12
Vitamin B12 is an essential nutrient for healthy nerves, red blood cells and energy metabo…
IngredientGinkgo Biloba
Ginkgo biloba is a popular herbal extract for circulation and memory — but the largest, be…
IngredientBacopa Monnieri (Brahmi)
Bacopa monnieri is an Ayurvedic herb with some of the better human evidence among cognitiv…
IngredientPhosphatidylserine
Phosphatidylserine is a fat that is part of every cell membrane and is concentrated in the…
IngredientAcetyl-L-Carnitine (ALCAR)
Acetyl-L-carnitine is a form of the amino-acid-like compound carnitine that crosses into c…
IngredientHuperzine A
Huperzine A is a plant alkaloid that acts much like a drug, blocking an enzyme that breaks…
IngredientSt John's Wort
St John's Wort is one of the better-evidenced herbal remedies for mild-to-moderate depress…
IngredientGreen Tea Extract (EGCG)
Green tea extract concentrates the antioxidant catechins found in green tea, especially EG…
IngredientOlive Leaf Extract
Olive leaf extract is rich in a compound called oleuropein. Small studies hint at modest b…
IngredientBilberry
Bilberry is a European relative of the blueberry, rich in antioxidant anthocyanins. It is …
IngredientGrape Seed Extract
Grape seed extract is rich in antioxidant proanthocyanidins. Its best-supported effect is …
IngredientCranberry
Cranberry contains compounds that may stop UTI-causing bacteria from sticking to the bladd…
IngredientProbiotics (Lactobacillus & friends)
Probiotics are live microorganisms that can support digestion — but their effects are stra…
IngredientCollagen (Hydrolysed Peptides)
Collagen peptides are the most popular skin and joint supplement. There is some genuine tr…
IngredientAshwagandha
Ashwagandha is an Ayurvedic adaptogen taken mainly for stress and sleep. It has a reasonab…
IngredientRhodiola Rosea
Rhodiola is an adaptogenic herb taken for fatigue and stress. Small studies hint at reduce…
IngredientL-Theanine
L-theanine is an amino acid from tea that promotes a state of calm alertness without sedat…
IngredientLion's Mane (Hericium erinaceus)
Lion's mane is an edible mushroom studied for cognition and mood. Laboratory work on nerve…
IngredientPanax Ginseng (Asian Ginseng)
Asian ginseng is a traditional tonic taken for energy, vitality, cognition and immune supp…
IngredientMagnesium
Magnesium is an essential mineral involved in hundreds of body processes, including nerve …
IngredientVitamin D
Vitamin D is essential for bones and plays a role in immunity. Deficiency is common, and s…
IngredientZinc
Zinc is an essential mineral vital for immune function, wound healing, taste, smell and ma…
IngredientOmega-3 Fish Oil (EPA & DHA)
The omega-3 fatty acids EPA and DHA from fish oil have solid evidence for lowering triglyc…
IngredientCoenzyme Q10 (CoQ10)
CoQ10 is a compound your cells use to make energy and as an antioxidant. It is popular for…
IngredientTurmeric / Curcumin
Curcumin, the active compound in turmeric, has anti-inflammatory properties and modest evi…
IngredientCinnamon
Cinnamon is widely promoted for blood sugar, but the human evidence is small and inconsist…
IngredientChromium (Picolinate)
Chromium is a trace mineral marketed for blood sugar and weight. Genuine deficiency is rar…
IngredientGymnema Sylvestre
Gymnema is an Ayurvedic herb nicknamed the 'sugar destroyer' because it temporarily blunts…
IngredientSaw Palmetto
Saw palmetto is the most popular herbal supplement for prostate-related urinary symptoms. …
IngredientBeta-Sitosterol
Beta-sitosterol is a plant sterol with two distinct uses: easing prostate urinary symptoms…
IngredientPygeum (African Plum Bark)
Pygeum is a bark extract used for prostate-related urinary symptoms. Older trials hinted a…
IngredientStinging Nettle
Stinging nettle is used in two ways: the root for prostate urinary symptoms and the leaf f…
IngredientTongkat Ali (Longjack)
Tongkat ali is a Southeast Asian root marketed for male vitality, testosterone and stress.…
IngredientMaca (Lepidium meyenii)
Maca is a Peruvian root food taken for libido, energy and mood. Small studies suggest a po…
IngredientL-Arginine
L-arginine is an amino acid the body turns into nitric oxide, a molecule that relaxes bloo…
IngredientL-Citrulline
L-citrulline is an amino acid that the body converts into arginine — and it raises nitric …
IngredientEpimedium (Horny Goat Weed)
Epimedium, or horny goat weed, is a traditional Chinese herb marketed for libido and erect…
IngredientFenugreek
Fenugreek is a culinary seed studied for blood sugar, male vitality and breast-milk supply…
IngredientPsyllium Husk
Psyllium is a soluble fibre with strong, well-established evidence — it relieves constipat…
IngredientGinger
Ginger is a culinary root with genuinely good evidence for one thing in particular: easing…
IngredientMilk Thistle (Silymarin)
Milk thistle is the classic 'liver support' herb, built around an antioxidant complex call…
IngredientN-Acetylcysteine (NAC)
NAC is a well-established medicine — used in hospitals as a paracetamol-overdose antidote …
IngredientQuercetin
Quercetin is a plant antioxidant flavonoid marketed for allergies, immunity and blood pres…
IngredientGarcinia Cambogia (HCA)
Garcinia cambogia is a tropical fruit extract heavily marketed for weight loss. The weight…
IngredientBoswellia (Frankincense)
Boswellia, the resin behind frankincense, is taken for joint comfort. Small trials suggest…
IngredientGlucosamine
Glucosamine is one of the most popular joint supplements, but large rigorous trials have l…
IngredientChondroitin
Chondroitin is a cartilage component often paired with glucosamine for joint health. As wi…
IngredientMSM (Methylsulfonylmethane)
MSM is a sulphur compound taken for joint comfort and, sometimes, exercise recovery. A han…
IngredientMelatonin
Melatonin is the body's sleep-timing hormone, sold as a supplement mainly for jet lag and …
IngredientValerian Root
Valerian is a traditional herbal sleep and anxiety remedy. It's widely used and generally …
IngredientVitamin C
Vitamin C is an essential antioxidant nutrient needed for immunity, collagen and iron abso…
IngredientSelenium
Selenium is an essential trace mineral important for thyroid function, antioxidant defence…
IngredientGarlic
Garlic supplements are taken for heart health. The evidence points to modest reductions in…
IngredientEchinacea
Echinacea is the classic 'cold' herb. The evidence is genuinely mixed — it may slightly re…
IngredientElderberry (Sambucus)
Elderberry is a dark, antioxidant-rich berry popular for colds and flu. Small studies hint…
IngredientCreatine
Creatine is one of the most studied and effective sports supplements, with solid evidence …
Ingredient5-HTP (5-Hydroxytryptophan)
5-HTP is a direct precursor to serotonin, taken for mood, sleep and appetite. It has some …
IngredientInositol (Myo-Inositol)
Inositol is a vitamin-like compound with its best evidence in polycystic ovary syndrome (P…
IngredientBeetroot (Dietary Nitrate)
Beetroot is a dietary source of nitrate that the body turns into nitric oxide, relaxing bl…
IngredientHawthorn (Crataegus)
Hawthorn is a traditional heart tonic studied mainly as an add-on in mild heart failure. B…
IngredientPycnogenol (Pine Bark Extract)
Pycnogenol is a branded French maritime pine bark extract rich in antioxidant proanthocyan…
IngredientRed Yeast Rice
Red yeast rice lowers cholesterol — because it naturally contains monacolin K, which is ch…
IngredientCitrus Bergamot
Citrus bergamot is a citrus extract studied for cholesterol and blood sugar. Some trials s…
IngredientCiticoline (CDP-Choline)
Citicoline is a choline-containing compound studied for memory, focus and brain health. It…
IngredientTaurine
Taurine is an amino acid involved in heart, muscle and nervous-system function. It's very …
Supplement & product guides
Brain & Memory SupportNeuro Sharp
Neuro Sharp is a capsule supplement formulated to support focus and everyday memory using …
Gut & Digestive HealthFinessa
Finessa is a capsule supplement that targets the gut-liver axis, combining probiotics, pre…
Skin & Anti-AgingSouth Beach Collagen Filler Serum
South Beach Collagen Filler is a twice-daily topical serum built around soluble collagen a…
Nail & Foot CareNail Refresh
Nail Refresh is a topical botanical oil for nails and feet, marketed to improve the look o…
Nerve HealthNervora
Nervora is a once-daily nerve-support supplement built on three research-backed nutrients …
Brain & Memory SupportNeuro Serge
Neuro Serge is a botanical nootropic that uses a 20+ ingredient plant-based blend — includ…
Women's Bladder & Urinary HealthFemicore
Femicore is a women's daily capsule combining probiotic strains and botanicals, marketed t…
Blood Sugar & MetabolismGluco Extend
Gluco Extend is a blood-sugar support supplement built around ingredients with real metabo…
Prostate & Men's Urinary HealthProstaPeak
ProstaPeak is a prostate-support supplement combining the usual men's-health botanicals — …
Nerve HealthNerveAlive
NerveAlive is a nerve-support supplement built on ingredients with genuine nerve research …
Oral & Dental HealthBiodentix
Biodentix is an oral-health supplement built around xylitol, cranberry, grape seed and pep…
Weight & MetabolismFlashBurn
FlashBurn is a weight-loss supplement whose formula varies noticeably between versions — t…
Men's Vitality & TestosteroneVigorPeak
VigorPeak is a men's-vitality supplement built on the usual testosterone/libido botanicals…
Men's Vitality & TestosteroneManForceX
ManForceX is a men's-vitality supplement combining tongkat ali, horny goat weed, saw palme…
Weight & MetabolismIgnitra
Ignitra is a metabolism and blood-sugar supplement led by berberine and konjac fibre, with…
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How we review supplements
Every guide is researched against published sources, written in plain language, and reviewed by the FactoWiki Editorial Team for clarity and source accuracy before it is published. We describe what research suggests — never what we wish it showed — and we avoid words like "cure," "guaranteed" or "miracle." Read our full editorial policy to see how we work.
Safety first
FactoWiki provides educational information, not medical advice. Supplements can interact with medications and aren't right for everyone. Always speak with a doctor or pharmacist before starting one — especially if you are pregnant, nursing, taking medication, or managing a health condition. See our medical disclaimer and affiliate disclosure.