Vitamin E is a fat-soluble vitamin.
Vitamin E is an antioxidant. This means it protects body tissue from damage caused by substances called free radicals, which can harm cells, tissues, and organs. They are believed to play a role in certain conditions related to aging.
The body also needs vitamin E to help keep the immune system strong against viruses and bacteria.
Vitamin E is also important in the formation of red blood cells and it helps the body use vitamin K. It also helps widen blood vessels and keep blood from clotting inside them.
Cells use vitamin E to interact with each other and carry out many important functions.
Whether vitamin E can prevent cancer, heart disease, dementia, liver disease, and stroke still requires further research.
The best way to get the daily requirement of vitamin E is by eating food sources. Vitamin E is found in the following foods:
Products made from these foods, such as margarine, also contain vitamin E.
Eating vitamin E in foods is not risky or harmful. However, high doses of vitamin E supplements might increase the risk for bleeding and serious bleeding in the brain.
High levels of vitamin E may also increase the risk of birth defects.
Low intake may lead to hemolytic anemia.
The Recommended Dietary Allowance (RDA) for vitamins reflect how much of each vitamin most people should get each day.
The Food and Nutrition Board at the Institute of Medicine Recommended Intakes for individuals for vitamin E:
Infants (adequate intake of vitamin E)
Adolescents and adults
Ask your health care provider which amount is best for you.
The highest safe level of vitamin E supplements for adults is 1,500 IU/day for natural forms of vitamin E, and 1,000 IU/day for the man-made (synthetic) form.
Institute of Medicine. Food and Nutrition Board. Dietary Reference Intakes for Vitamin C, Vitamin E, Selenium, and Carotenoids. National Academies Press. Washington, DC, 2000. PMID: 25077263 www.ncbi.nlm.nih.gov/pubmed/25077263.
Mason JB. Vitamins, trace minerals, and other micronutrients. In: Goldman L, Schafer AI, eds. Goldman-Cecil Medicine. 25th ed. Philadelphia, PA: Elsevier Saunders; 2016:chap 218.
Salwen MJ. Vitamins and trace elements. In: McPherson RA, Pincus MR, eds. Henry's Clinical Diagnosis and Management by Laboratory Methods. 23rd ed. St Louis, MO: Elsevier; 2017:chap 26.
Review Date: 1/7/2017
Reviewed By: Emily Wax, RD, The Brooklyn Hospital Center, Brooklyn, NY. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.