Healthy Origins High Potency Vitamin C contains IP (identity-preserved) Non-GMO tested L-ascorbic acid. Vitamin C is a water-soluble antioxidant which is required for the biosynthesis of L-carnitine, collagen and norepinephrine. Copious amounts of research over decades of clinical use have confirmed its beneficial role in immune system support, healthy collagen synthesis, healthy cell function and free radical elimination.*