What are the risks of taking vitamin E?

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Dr. Michael Roizen, MD
Internal Medicine
Like aspirin, vitamin E thins your blood, making clots less likely to form. The quinone (a chemical part of vitamin E) in vitamin E has powerful anticlotting powers. Several studies have noticed an increase in bleeding when vitamin E and aspirin are used in combination, a condition implicated in both ulcers and strokes. It is rare, but discuss this possibility with your physician, especially if you have a history of ulcers or other blood-clotting problems.

Vitamin E is safe when taken for short periods of time and with the recommended dose. Taking vitamin E for a prolonged period of time and in high doses may increase the risk of death by a small amount. In some rare cases, vitamin E supplements have caused gonadal dysfunction and reduced kidney functioning. Taking high doses of vitamin E may also increase the risk of bleeding.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.