Vitamin C plays an important role in supporting immune function. As antioxidant, Vitamin C helps neutralize harmful free radicals in cells. Vitamin E is a fat-soluble antioxidant that fights cell-damaging free radicals in the body. Vitamin E helps stabilize cell membranes and regulates oxidation reactions in the body. Some scientific evidence suggests that consumption of antioxidant vitamins such as Vitamin C and Vitamin E may reduce the risk of certain forms of cancer.