Vitamin E can also be called Alpha Tocopherol, Tocopherol, Tocopheryl (Acetate, Succinate) and is an anti-oxidant that protects cell membranes and other fat-soluble parts of the body, such as low-density lipoprotein (LDL; 'bad' cholesterol) cholesterol, from damage. Antioxidants such as vitamin E act to protect your cells against the effects of free radicals, which are potentially damaging by-products of energy metabolism. Certain vegetable oils should contain significant amounts of vitamin E. However, many of the vegetable oils sold in supermarkets have had the vitamin E removed in processing. The high amounts found in supplements, often 100 to 800 IU per day, are not obtainable from eating food. It is available in tablet, capsule or liquid form.