Riboflavin or Vitamin B2 plays a key role in the activation and conversion of other B vitamins and essential for production of healthy cells. It is a pure orange powder and has no fillers, additives or preservatives. Various sizes available for personal use and quantity discounts available on bulk-packed foods and food powders for commercial uses. Only the highest quality natural food and bulk ingredients are sourced through family-owned Prescribed For Life Nutrition. Thank you for shopping with us and please come again!