From the Manufacturer What Is Selenium Complex? Some of the longest-living persons in the world have been shown to have high levels of selenium and other health-promoting elements. However, our bodies use selenium in different ways depending on its structure. In order to provide complete support for thyroid health, healthy aging, and general health, our Super Selenium Complex solution includes three different types of selenium in addition to vitamin E. Selenium helps your body fight a key factor that contributes to aging: oxidative damage. Super Selenium Complex Benefits 1. Encourages the body's natural aging processes2. Promotes immunological and thyroid health3. Helps protect against oxidative stress, especially for cardiovascular and brain health Super Selenium Complex 200mcg 100ct