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Vitamins are substances that your body needs to grow and develop normally. Vitamin E is an antioxidant. It plays a role in your immune system and metabolic processes.

Good sources of vitamin E include

• Vegetable oils
• Margarine
• Nuts and seeds
• Leafy greens

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