What is Vitamin C 1000mg Low Acid? Vitamin C is an antioxidant which is not stored in the body & therefore daily intake from the diet is essential. Vitamin C is easily destroyed by over cooking or long storage of fresh food, or as a consequence of heavy smoking or drinking. Taking a Vitamin C supplement may help to safeguard the dietary intake of this important nutrient. What Does Vitamin C 1000mg Low Acid Do? Vitamin C is an important antioxidant, which may help protect the body against free radical damage. Free radicals are chemicals which are created by our own metabolism, as well as from environmental factors such as smoking, air pollution & UV light exposure etc.. Vitamin C may help maintain healthy skin, gums & immune system.