Is selenium a mineral?

Selenium is a mineral found in the soil. Selenium naturally appears in water and some foods. While people only need a very small amount, selenium plays a key role in the metabolism. read more

Selenium is available in multivitamin/multimineral supplements and as a stand-alone supplement, often in the forms of selenomethionine or of selenium-enriched yeast (grown in a high-selenium medium) or as sodium selenite or sodium selenate [2,5,6]. read more

While selenium is a necessary mineral, high amounts are toxic. The Food and Nutritition Board (FNB) has set the upper limit of selenium found through food and supplements to 400 mcg a day in adults. As with any supplement, check with a healthcare provider for a level safe for you. read more