The Energy Supplements High Potency Vegetarian Gluten Free Nutrition 21 - Food-Form Selenium 200 mcg with Vitamin E Quality Natural Supplements Nutritional support for free-radical defense and overall well-being. Selenium, another antioxidant, is concentrated in several vital organs, including the liver and kidneys. Super Selenium Complex has 200 mcg of Selenium with 100 IU of antioxidant partner Vitamin E. Plus a natural base of brewer's yeast, chromium and GTF (glucose tolerance factor).