Vitamin C is among the most powerful antioxidants in humans. Vitamin C is a water-soluble antioxidant that can react directly with superoxide and hydroxyl radicals to decrease potential damage to cells within the body. In addition, vitamin C interacts with glutathione and alpha-lipoic acid, and can regenerate the antioxidant potential of vitamin E. Vitamin C helps in the development and maintenance of bones, cartilage, teeth and gums. In bone, Vitamin C helps form collagen in the bone matrix while scavenging free radicals that can be detrimental to bones. Vitamin C supplementation has been associated with increased bone mineral density and lower fracture probabilities in adults.