Selenium plays a role in the functioning of the thyroid gland.
 
What Does Selenium Do?
Selenium plays an important role in the functioning of the immune system, in thyroid hormone metabolism, and reproduction. Selenium is part of the body’s antioxidant defence system, preventing damage to cells and tissues. It can be found in the following food sources: Brazil nuts; bread; fish; meat; and eggs.
 
The Selenium is taken from SELENOMETHIONINE which also contains Di Calcium Phosphate Anhydrous.