Vitamin B7 (biotin) — answers to Biotin
Hasn’t appeared in a scanned product yet.
Talk to your doctor or pharmacist.
Roll Call does not check drug interactions or assess personal safety.
Biotin is a water-soluble B vitamin that acts as a helper molecule for several enzymes involved in metabolizing fats, carbohydrates, and proteins.
Why it’s used
Taken to support metabolism generally, and widely marketed for hair, skin, and nail appearance.
What the evidence is for
supporting normal fat, carbohydrate, and protein metabolism.
What the evidence says
Per NIH ODS, biotin's role in metabolic enzyme function is well established and deficiency (rare) causes hair thinning and skin rashes. Evidence that supplemental biotin improves hair or nail appearance in people who are not deficient is limited.
Dose studied
30–30 mcg — Adequate Intake for adults, per NIH ODS.
Context
NIH ODS sets an Adequate Intake for biotin rather than an RDA, reflecting limited data on precise requirements; clinical deficiency is uncommon in typical diets.
Educational information, not medical or safety advice. Consult a professional for allergies or medical concerns.