Natural Antioxidant Protection With Mixed Tocopherols Non-GMO A Dietary Supplement Vitamins Family Owned Since 1968 GMP Quality Assured Vitamin E is a major antioxidant and the primary defense against lipid peroxidation. It is particularly important in protecting the body's cells from free radical/oxidative damage. Cell protection against oxidative damage is achievable with supplemental intakes higher than what is normally consumed in the average diet.