Vitamin C (Vitamin C, Ascorbic Acid) known as L-ascorbic acid, is a water-soluble vitamins. Food vitamin C absorption by human small intestine. Once absorbed into the body on the distribution of all the water-soluble structure, the normal adult metabolic activity of the body pool of vitamin C about 1500mg of vitamin C, the highest peak storage 3000mg of vitamin C. Under normal circumstances, most vitamin C in the body by metabolism of oxalic acid or sulfuric acid decomposed into combination of generating ascorbic acid -2 - sulfuric acid from the urine; the other part directly from the urinary excretion.