Vitamin E is prized for its powerful antioxidant action and its other vital roles. NOW E-400 uses a specific form of Vitamin E, d-alpha Tocopheryl acetate, which is recognized as the most easily absorbed form. Since Vitamin E is fat soluble, not water soluble, the E-400 softgels include a small amount of vegetable oil to increase absorption.As an antioxidant, Vitamin E protects against free radicals, which are extremely reactive compounds that can cause a lot of damage if unchecked. In addition to this protective function, Vitamin E is also involved in immune function, formation of red blood cells, and helping the body use vitamin K. Protect your body with 100% natural vitamin E in NOW E-400.