Nature's Harbor Vitamin E DL-Alpha Tocopheryl is an excellent value. Our Vitamin E is 100% natural DL-Alpha Tocopheryl which makes more Vitamin E available to your body than any other form. Vitamin E is a potent antioxidant that protects cellular membranes from damage caused by free radicals. This is a key antioxidant for a healthy immune system. It also contributes to a healthy circulatory system, helps to protect skin from ultraviolet light damage, and decreases symptoms of premenstrual syndrome and certain types of breast disease.