Vitamin C is a powerful antioxidant that is traditionally used to help maintain a healthy immune system and support the body's production of the structural protein collagen as well as connective tissue, bones, teeth and gums. Research suggests that doses of Vitamin C above 135mg per day have been associated with reduced cataract risk. The perfect immune booster, Vitamin C has been shown to reduce the risk of catching a cold by as much as 30% as well as reducing the duration of infection.