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NOW: Biotin 1,000 mcg Capsules. PRODUCT DESCRIPTION Maintains Good Health Helps metabolize proteins, fats, carbohydrates Supports hair, skin, and nail health Mid level potency Biotin is a water-soluble vitamin necessary for normal growth and body function. Biotin is a key regulatory element in gluconeogenesis, fatty acid synthesis, and in the metabolism of some amino acids. Alongside its role in energy production, Biotin enhances the synthesis of certain proteins. In addition, Biotin promotes normal immunity and plays a critical role in hair, skin and nail health. NPN 80029225 Adult Dosage: Take 1 capsule once daily. Consult a health care practitioner for use beyond 28 days. Each capsule contains: Biotin 1000 mcg Non-Medicinal Ingredients: Rice Flour, Capsule (gelatin, water), Ascorbyl Palmitate and Silica.