An essential nutrient found mainly in fruits and vegetables. The body requires Vitamin C to form and maintain bones, blood vessels, and skin. Vitamin C is also known as ascorbic acid. It occurs naturally in some foods, especially, fruit and vegetables. Vitamin C plays an important role in a number of bodily functions including the production of collagen, L-carnitine, and some neurotransmitters. It helps metabolize proteins and its antioxidant activity may reduce the risk of some cancers.