Excerpt
Vitamin E or tocopherol is a fat-soluble vitamin functioning as an antioxidant, protecting the cell membrane. As with all vitamins, the body does not form vitamin E. It solely forms from photosynthetic processes of plants, and therefore must be consumed from outside sources in small quantities. It is found abundantly in olive and sunflower oils, as well as nuts, soybeans, avocados, wheat, and green leafy vegetables.