complex A group of vitamins including thiamine, niacin, riboflavin, pantothenic acid, pyridoxine, biotin, and folic acid; plays a variety of important roles in the body, including in hormone production, metabolism, and functioning of the nerves, muscle, heart, and digestive system.
Eleven different vitamins known as B complex : thiamin (B1), riboflavin (B2), niacin (B3), folic acid, biotin, pantothenic acid or panthenol (B5), pyridoxine (B6), choline, inositol, PABA, and cyanocobalamin (B12). Antioxidants and body regulators that work better together than alone.