Natural. Origin - USA Ingredients: Dried yeast, niacin (B3), pyridoxine hydrochloride (B6), thiamine hydrochloride (B1), riboflavin (B2), folic acid, cyanocobalamin (B12). Appreciated for its high protein content and rich B-complex vitamins that are important for normal and healthy body functions. It contains other beneficial components known to improve the immune response and help maintain healthy cholesterol levels