It is an extended release tablet (6 to 8 hours) plus a synergistic bioflavonoid blend. Vitamin C contributes to the normal functioning of the immune system during and after intense physical exercise. It contributes to the normal formation of collagen for the normal functioning of skin, teeth, gums, cartilage, bones, blood vessels, supports normal energy metabolism, contributes to the normal functioning of the nervous system, helps reduce tiredness, fatigue, to the protection of cells against oxidative damage, to regenerate vitamin E and improve the absorption of iron.