Vitamin C, also known as ascorbic acid, is necessary for the growth, development and repair of all body tissues. It's involved in many body functions, including formation of collagen, absorption of iron, the proper functioning of the immune system, wound healing, and the maintenance of cartilage, bones, and teeth. Good sources of vitamin C: citrus fruit, such as oranges and orange juice, peppers, strawberries, blackcurrants,broccoli, brussels sprouts, potatoes. Vitamin C is a vital nutrient for health. It helps form and maintain bones, skin, and blood vessels. It is also an antioxidant.Vitamin C occurs naturally in some foods, especially fruits and vegetables. Vitamin C supplements are also available.Other names for vitamin C include L-ascorbic acid, ascorbic acid, and L-ascorbate. Vitamin C is water soluble, and the body does not store it. To maintain adequate levels of vitamin C, people need to consume food that contains it every day.