Brewer's Yeast has several naturally occurring vitamins and minerals, with most notably B-vitamins. In addition, brewer's yeast offers other components, such as amino acids and beta-glucans. No synthetic vitamins are added to the yeast during processing. Brewer's Yeast is a genuine whole food supplement. Brewer's yeast has naturally occurring B-vitamins such as: thiamin (vitamin B-1), riboflavin (vitamin B-2), niacin, vitamin B-6, folic acid, biotin, and pantothenic acid. Natural color variations may occur in this product. Store in a cool, dry place after opening.