Vitamin E is an antioxidant. It plays a role in your immune system and metabolic processes.
Good sources of vitamin E include
Vitamin E is also added to foods like cereals. Most people get enough vitamin E from the foods they eat. People with certain disorders, such as liver diseases, cystic fibrosis, and Crohn's disease may need extra vitamin E.
Vitamin E supplements may be harmful for people who take blood thinners and other medicines. Check with your health care provider before taking the supplements.
NIH: National Institutes of Health Office of Dietary Supplements