Vitamin C, also called ascorbic acid, is one of the most beneficial nutrients for the human body. It is water soluble. It is found in citrus fruits, berries, bell peppers as well as other plants. Unlike most animals, humans are unable to synthesize vitamin C internally, so we must get it in through our diet. In nature ascorbic acid is always found attached to bioflavonoids which aid in the vitalization of vitamin C. In a supplement vitamin C and bioflav. Together appear to be better used. C is required for the biosynthesis of collagen, carnitine, certain neurotransmitters, and protein metabolism. As strong antioxidant, believed to delay development of certain cancers, cardiovascular disease, and all other disorders in which oxidative stress plays a role. Definite immunity booster helping to deter colds and aids in the absorption of iron.