Dietary Supplement. List No. 2936. L201. USP verified. 25% more free. No. 1 pharmacist recommended (Based on Pharmacy Times Survey of pharmacists recommending Letter Vitamin Supplements). USP verified. Maximum strength for adults diagnosed with very low levels of Biotin (For those with biotin deficiency). Nature Made Maximum Strength Biotin provides 5000 mcg of biotin, a B vitamin that supports carbohydrate, protein and fat metabolism. Biotin may also help support healthy hair, skin and nails for those that are biotin deficient. Maximum 5,000 mcg - Helps restore healthy levels of biotin in adults with very low levels, as diagnosed by their health care professional using appropriate biomarkers. For more information, visit NatureMade.com. Strength Levels of Biotin: Regular - 300 mcg or below; Extra: Above 300 mcg up to 2,5000 mcg; Maximum: Above 2,500 mcg up to 5,000 mcg. Colors derived from natural sources - no synthetic dyes. No artificial flavors. No preservatives. No yeast or starch. Gluten free. www.NatureMade.com. USP has tested and verified ingredients, potency, and manufacturing process. USP sets official standards for dietary supplements. www.uspverified.org. (These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.)