Vitamin E 400 IU is a high potency, naturally sourced vitamin E in the form of d-alpha tocopherol with naturally occurring beta-, delta- and gamma-tocopherols. Vitamin E is an antioxidant that protects cell membranes and prevents free radical damage to the body.* It supports the cardiovascular system and general health.* Daily supplementation of vitamin E is particularly important to maintain healthy cell growth and for those with active lifestyles.