Affiliate disclosure: links may earn us a commission at no extra cost to you.
Sports Research Biotin uses a unique liquid-softgel format where 5,000 mcg of D-biotin is suspended in cold-pressed organic coconut oil, providing additional MCT support and improving stability and bioavailability. The 120-softgel bottle provides a 4-month supply at one daily softgel. Visible hair shaft thickness and nail growth improvements typically emerge after 2-3 months of consistent use. Important caveat: discontinue at least 48 hours before any blood test to avoid interference with thyroid, hormone, and other biotin-based laboratory immunoassays.
Supports keratin production for hair growth and nail strength. Pair with collagen and protein for visible results.
Read the full ingredient guide →Take our quiz. We'll compose a complete stack that fits your goals, body, and budget, in minutes.
Take the quiz →