Bronson Basics Biotin provides a potent 5,000 MCG of Biotin per mini tablet in a 1-year supply bottle. By supplying 5,000 MCG per mini tablet, Bronson Basics Biotin enables valuable daily replenishment that helps to support healthy hair, skin, nails, and energy production.* Laboratory tested and free of GMOs, Gluten, and Soy, our Biotin 5,000 MCG is in-house tested and carefully manufactured by trained professionals in our state-of-the-art facility located in Hauppauge, New York. Bronson Basics Biotin 5,000 MCG is vegan/vegetarian friendly and contains no ingredients derived from animals.