One of the most well-known and researched antioxidants. There are eight basic forms of the entire fat soluble vitamin E molecule, which are either synthetically or naturally derived. The most typical forms are d-alpha-tocopherol, d-alpha-tocopherol acetate, dl-alpha tocopherol, and dl-alpha tocopherol acetate. The “d” prefix in front of the “alpha” indicates that the product was derived from natural sources, such as vegetable oils or wheat germ; the “dl” prefix indicates that the vitamin was created from a synthetic base. Research has shown that natural forms of vitamin E are more effective than their synthetic counterparts, but both definitely have antioxidant activity.