Vitamin C 4 fl ozVitamin C (L ascorbic acid) is a powerful water soluble nutrient with pleiotropic functions; it fortifies the body against oxidative stress, regulates immunity, and serves as a cofactor in the biosynthesis of connective tissue, among many other roles. Unlike many other mammals, the human body cannot manufacture vitamin C endogenously, necessitating its inclusion in the diet. Intestinal absorption of oral vitamin C is limited, falling to less than 50