Features and Benefits Helps maintain normal function of the thyroid gland Source of an antioxidant that helps reduce the oxidative damage caused by free radicals Helps prevent selenium deficiency to support biological functions that play a key role in the maintenance of good health Provides 200 mcg of selenium per day SKUs: 1675Feature SummaryNatural Factors SelenoExcell Selenium contains organically bound high-selenium yeast that enhances selenium absorption and use by the body. Selenium is an essential trace mineral that helps maintain normal function of the thyroid gland. It is also a source of an antioxidant that helps reduce the oxidative damage caused by free radicals. This one-per-day formula provides 200 mcg of elemental selenium in easy-to-take capsules. It is non-GMO and gluten-free.