Selenium is an essential trace element and contributes to the maintenance of normal hair and nails, function of the immune system, normal thyroid function, protection of cells from oxidative stress and normal spermatogenesis. HealthAid
Time Release Vitamin C 1000mg. These tablets are specially formulated to release the vitamin C gradually over 6-8 hours after swallowing, which means that the absorption of vitamin C into the bloodstream also occurs gradually. This is believed to create a more stable level of vitamin C in the blood for a longer period.