Riboflavin capsules by BulkSupplements.com is one of the selections from our vitamin supplements. Riboflavin is also known as Vitamin B2 and its an important vitamin and it's one of the eight B vitamins.* Vitamin B2 is naturally found in dairy products and sources like grains. Each capsule of this product contains 400mg of Vitamin B2, as Riboflavin, and take about 1 capsule for a total of 400mg per serving. And, we sell it in 90 Count in gelatin capsules form stored in bottles. Each of the bottles supplies a 90 days or 3 months period. Our Riboflavin capsules, or Vitamin B2 capsules, are pure, natural and does not contain any fillers, additives, and artificial flavors. And our Vitamin B2 capsules are dairy free, soy free, yeast free, and no added sugar. All products by BulkSupplements.com are manufactured according to cGMP Standards to ensure the highest quality for manufacturing, packaging, labeling, and holding operations. We work with a third-party laboratory that test our products at multiple stages during production, from raw material to finished products, and ensures compliance, standards, and consistency.