As an essential cofactor of glutathione peroxidase 73 , selenium is an important antioxidant. It is also involved with iodine metabolism, DNA repair 75 , immune function, and the detoxification of heavy metals. High doses of vitamin C (over 1 gram) may reduce the absorption of selenium. This mineral is best taken one hour before or 20 minutes after taking vitamin C supplements.

Vitamin Depot Online.com offers Super Selenium along with other vitamins.