Biotin (Vitamin B7)
A B-vitamin marketed heavily for hair, skin, and nails.
Educational only — not medical advice. BodEvo summarizes research cautiously and labels estimates as estimates. Talk to a physician or registered dietitian before starting any supplement, diet, or training program.
What the evidence says
Hair/nail benefits are mainly seen in genuine deficiency, which is rare.
Typical dose & timing
Dose: AI ~30 mcg; megadose products are common but unproven for most.
Timing: With meals.
Role in a stack
Beauty-marketed B-vitamin.
Redundancy check: Redundant with a balanced diet for non-deficient people.
Cautions & safety
High-dose biotin can INTERFERE with lab tests (e.g., thyroid, troponin) — tell your clinician.
Can skew bloodwork at high doses. Educational only — not medical advice.
Best for
diagnosed deficiency only
Use it in the app: open the Supplement Library and Stack Builder — free, local-first, no account required.