Pure Encapsulations Biotin promotes healthy glucose metabolism and nerve health, also helps support healthy nails.  It is a water-soluble B vitamin that is an essential co-factor for a number of metabolic carboxylation reactions, including carbohydrate, fat and protein metabolism. Biotin provides potential support for healthy glucose metabolism, nerve function and nail strength.Recommended Dosage: 1-2 capsules daily, in divided doses, with meals. Medicinal Ingredients: (per capsule): Biotin 8 mg.Non-medicinal Ingredients: Hypo-allergenic plant cellulose, Hydroxypropyl methylcellulose, Purified water.