Vitamin E is the common name for fat-soluble tocopherol and tocotrienol, which in the body participate in the maintenance of the plasma membrane. They also act as antioxidants and protect the polyunsaturated fatty acids of the body against free radicals and oxidation. Good sources of vitamin E include e.g. vegetable oils, edible fats, full-grain products and nuts. Vitamin E deficiency is extremely rare in Finland.
Energy drinks contain ca. 4.0 mg of vitamin E per 100 ml, or about 40% of the recommended daily intake. Large intake amounts of vitamin E may prevent the absorption of vitamins A, D and K.