Source Naturals Selenium, 200mcg, 120 Tablets Size:200 mcg Dietary supplement. Yeast-free. From L-Selenomethionine. Selenium is essential for the functioning of the biologically important enzyme glutathione peroxidase. Glutathione peroxidase neutralizes hydrogen peroxide thereby promoting healthy tissues. Features: Yeast free Essential for the functioning of the biologically important enzyme glutathione peroxidase Glutathione peroxidase neutralizes hyprogen peroxide Promotes healthy tissues 2 tablet daily, or as recommended by your health care professional Product Details: Product Dimensions: 1.3 x 1.3 x 1.6 inches Shipping Weight: 0.8 ounces Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues. International Shipping: This item is not eligible for international shipping. Learn More UPC: 021078009238 Item model number: SN0923