Nature's Harbor Vitamin E Complex is 100% natural and contains a mixture of Alpha, Beta, Delta and Gamma Tocopherols. 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.