Does Vitamin E interact with Selenium?

Written to our editorial standards · reviewed against published research· Updated 2 Jun 2026
Take together· moderate evidence

Antioxidant teammates.

Selenium is the core of glutathione-peroxidase enzymes that neutralise peroxides inside the cell, while vitamin E protects the fats in cell membranes from the same oxidative damage, so the two guard different fronts of the same battle.

What to do

Fine together at sensible doses. Selenium has a relatively narrow safe range, so do not megadose it (a couple of Brazil nuts supply a day's worth), and keep vitamin E modest, since high doses offer no benefit and may thin the blood.

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Vitamin E
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Selenium
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Common questions

Can I take Vitamin E and Selenium together?
Take together. Fine together at sensible doses. Selenium has a relatively narrow safe range, so do not megadose it (a couple of Brazil nuts supply a day's worth), and keep vitamin E modest, since high doses offer no benefit and may thin the blood.
Why do Vitamin E and Selenium interact?
Selenium is the core of glutathione-peroxidase enzymes that neutralise peroxides inside the cell, while vitamin E protects the fats in cell membranes from the same oxidative damage, so the two guard different fronts of the same battle.

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Educational use only, not medical advice. Interaction risk depends on dose, your health, and any medications. Always consult a qualified clinician, especially if you take prescription drugs or are pregnant or nursing.