Each vegetarian capsule of NOW Selenium supplies 200 mcg of elemental selenium (364% Daily Value) from L-selenomethionine, a highly absorbable form of this essential trace mineral. Selenium plays a role in the body's antioxidant defenses and is often studied for its support of thyroid and immune health.
Other ingredients are rice flour, hypromellose (cellulose capsule), microcrystalline cellulose, and stearic acid (vegetable source). NOW advises not exceeding one capsule daily except under the guidance of a healthcare practitioner, and notes that people living in high-selenium soil areas, such as the Dakotas, should consult a physician before use.
