Vitamins are needed for growth and good health. Vitamin E is thought to protect the body from the harmful effects of a chemical reaction known as oxidation. Vitamin E is important for many processes in the body. It is naturally found in foods such as vegetable oils, meat, eggs, milk, and leafy vegetables. Vitamin E is prescribed to treat a deficient state or as a supplement. It is also prescribed in certain other conditions like cystic fibrosis and abetalipoproteinaemia.