Herbs of Gold Selenium 150 Max 60cHerbs of Gold Selenium 150 MAX provides 150mcg of selenium in each capsule. High Strength Antioxidant Organic Form Provides 150mcg of selenium in each capsule. The selenium in Selenium 150 MAX is an organic form called selenomethionine, which is more bio available than inorganic forms of selenium. Selenium is an essential trace mineral and potent antioxidant and free radical scavenger. Selenium is an essential component of the enzyme system