Selenium is an essential trace element and contributes to the maintenance of normal hair, nails, function of the immune system, normal thyroid function, protection of cells from oxidative stress and normal spermatogenesis. HealthAid® Selenium in its natural form, which is best absorbed and utilised in the body; is also fortified with Vitamin E to make this a powerful antioxidant supplement in a balanced easy-to swallow, one-a-day capsule.