Solaray - Biotin Two-Stage Timed-Release 5000 mcg. - 60 Vegetarian Capsules Solaray Two Stage Timed Release Biotin contains 5000 mcg of biotin. Biotin a water-soluble B vitamin acts as a coenzyme in the metabolism of protein fats and carbohydrates. Biotin is an essential B vitamin that plays a vital
