Vitamin B2, a water-soluble member of the B-complex family of vitamins, plays a crucial role in converting protein, fats, and carbohydrates into the energy that the body demands to grow and develop property. Along with Vitamin B6 and niacin, riboflavin protects the nervous system. Vital to maintaining proper metabolism, riboflavin also helps to shore up the immune system by reinforcing antibody reserves. Along with iron, riboflavin is essential for producing the red blood cells that carry oxygen throughout the body. In addition, the body uses extra riboflavin to keep tissue in good repair and speed healing of wounds, burns and other injuries.