Vitamin B2 (Riboflavin) is a nutrient that is essential for energy production and the metabolism of carbohydrates, fats, and proteins.* Riboflavin is found in small quantities (less than 1 mg) in a variety of foods, but some people may benefit from much higher doses.* B2-400 is a unique formula that provides 400 mg of pure riboflavin per capsule. Research suggests that 400 mg of riboflavin per day may help certain individuals maintain mental clarity, healthy mood, and optimal productivity.* This product is manufactured in USA by Bio-Tech Pharmacal, Inc. under Good Manufacturing Practice ( GMP ), which ensures high quality, and is supplied with original packaging and labelling. * These statements have been made by Bio-Tech Pharmacal, Inc. in the USA and have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.