Vitamin C: Vitamin C (Vitamin C, Ascorbic Acid), also known as L-ascorbic acid, is a water soluble vitamin. Absorption of vitamin C in food by the body upper small intestine. Once absorbed, distributed to all water-soluble structure of the body, vitamin C metabolic activity of the normal adult body pool of about 1500mg vitamin C, the highest peak storage 3000mg of vitamin C. Under normal circumstances, the vast majority of vitamin C in the body through metabolism broken down into oxalic acid or ascorbic acid-2 combined with sulfuric acid to form - sulfuric acid from the urine; another part can be directly excreted in the urine.