NOW Selenium 200 mcg is a dietary supplement containing 90 vegetarian capsules of this essential trace mineral. Each capsule provides 200 micrograms of yeast-free selenium, which plays a vital role in supporting antioxidant activity and overall health maintenance. Selenium is an essential trace mineral that works as an antioxidant, helping protect cells from free radical damage. It supports immune system function, thyroid health, and reproductive wellness. The yeast-free formulation makes it suitable for those with yeast sensitivities. As a dietary supplement, selenium should be taken as directed by a healthcare professional, as excessive intake can be harmful. The 90-capsule bottle provides a multi-month supply when taken as recommended.