The key function of Vitamin E is acting as an antioxidant. Think of it as a protector, trapping unstable molecules — called free radicals — which can harm cells. Vitamin E is a fat-soluble nutrient found in multiple forms, but the human body primarily uses alpha-tocopherol. In MAXD, we include D-alpha-tocopherol succinate. Excellent dietary sources of Vitamin E are nuts and seeds, like sunflower seeds and flaxseeds, along with vegetable oils derived from them.