Are there any side effects of vitamin E?

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Overconsumption of the synthetic form of vitamin E that is found in supplements and/or fortified foods could pose risks.

Because vitamin E can act as an anticoagulant and interfere with blood clotting, excess amounts in your body increase the risk of hemorrhage. Because of this, the upper level from supplements and/or fortified foods is 1,000 milligrams for adults. This applies only to healthy individuals consuming adequate amounts of vitamin K. (Vitamin K also plays a role in blood clotting. A deficiency of vitamin K can exacerbate the anticoagulant effects of vitamin E.)

Individuals taking anticoagulant medication and vitamin E supplements should be monitored by their physician to avoid the serious situation in which the blood can’t clot quickly enough to stop the bleeding from a wound.

Always speak with your health care provider and a registered dietitian before consuming vitamin supplements.

If you have taken vitamin E for prolonged period of time and with doses greater than 400 units a day you may experience a number of side effects. Side effects may include blurred vision, diarrhea, dizziness, headache, nausea, stomach cramps, and fatigue. If you are using a topical vitamin E, you may experience side effects, such as contact dermatitis or eczema.

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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.