Holly Hill Health Foods, Selenium 200 MCG, 120 Capsules

What the brand says

Selenium is an essential trace mineral that is required for many important biochemical functions in the body. In humans, selenium functions as a coenzyme for the antioxidant enzyme glutathione peroxidase. Glutathione peroxidase is necessary for many body functions. Selenium also plays an important role in the support of the thyroid. The thyroid is responsible for many body functions that are important.