Nature's Bounty, Natural Selenium, 200 Mcg, 24 X 100 TabsProduct Description Selenium is a trace mineral found in soil and certain foods. It is essential for good health, supporting various bodily functions such as immune system performance and thyroid function. Selenium is primarily found in foods like Brazil nuts, seafood, and organ meats. Selenium is an essential trace mineral that supports the immune system. Some scientific evidence suggests that consumption of Selenium may reduce the risk of certain