The well-known vitamin Vitamin C contributes to the immune system, protects the eye from within, protects blood vessels from the attack of free radicals, stabilizes muscles, joints, skin and bones and promotes the absorption of iron into the body. ADDITIVA Vitamin C is a useful dietary supplement for those with a deficiency or increased need for vitamin C. The effervescent tablets with ascorbic acid are suitable for adults and contain 1000 mg of ascorbic acid (vitamin C). With a pleasant lemon flavor.