Vitamin E is an antioxidant that protects the body's cells and helps protect the eyes from the effects of free radicals. Natures Aid provide a range of strengths of Vitamin E, from 100iu to 1000iu all of which are natural Vitamin E. Each of the Vitamin E formulae contain mixed tocopherols 6mg in the 100iu, 12mg in the 200iu, 24mg in the 400iu, 30mg in the 500iu and 60mg in the 1000iu.