Indications: natures Bounty natural vitamin E - oil 30000 I. U is pure enough to take orally. Vitamin E is a fat-soluble antioxidant that protects cells from harmful free radicals. Vitamin E helps stabilize cell membranes and regulates oxidation reactions in the body. Natures Bounty natural e-oil is so pure it can be taken orally. Each five (5) drops contain 100 International units (I. U. ) of a vitamin E (d-alpha Tocopheryl Acetate) in a natural base of Wheat germ and vegetable oils.