Each soft gel provides 400 IU or 1333% of the RDA. Vitamin E is the best lipid phase antioxidant in the body. This antioxidant helps support healthy heart function. As a fat-soluble vitamin, our natural Vitamin E comes conveniently packaged in a vegetable oil-based soft gel. D-Alpha Tocopherol is regarded as the most active tocopherol available in terms of antioxidant activity.