Thorne Research Selenomethionine 60 Capsules @

Selenium is an important trace mineral and a constituent of the antioxidant enzyme glutathione peroxidase, which is necessary for neutralizing the free radical, hydrogen peroxide, as well as other lipid peroxides (oxidized fats). Selenium’s beneficial role is not limited to its antioxidant function; it is also necessary for conversion of the thyroid hormone T4 (thyroxine) to active T3 (triiodothyronine).

Selenium also appears to exert important positive effects on normal cell function and cell development.