Vitamin C buffered with the beneficial minerals calcium and magnesium, to ensure less irritation on the stomach. Vitamin C provides antioxidant protection for many of the body"s" important enzyme systems. White blood cells utilize Vitamin C to help produce cytotoxic enzymes which they use to eliminate foreign matter. It also helps strengthen collagen, a major connective protein. Vitamin C also plays an important role in the P450 enzyme detoxification system.