Healthvit Selenium 200MCG | 60 Capsules Healthvit Selenium 200mcg 60 Capsules.Selenium is an important trace mineral. It helps your body use its own antioxidants effectively and protects your heart. Selenium is an essential trace mineral. It is a component of the powerful antioxidant enzyme glutathione peroxidase, which helps to fight cell-damaging free-radicals and naturally assists in detoxification. Selenium also helps recycle vitamin E, which in turn helps to promote cell protection.It is also necessary for thyroid hormone metabolism and healthy thyroid hormone metabolism and healthy thyroid function. This formulation provides yeast-free selenium as sodium selenite.