Selenium supports the function of the immune system and helps protect cells and the whole body against adverse effects and oxidative stress. It is an important element for the proper functioning of the thyroid gland. In addition, Selén is involved in maintaining the health of nails and hair. Composition: selenium (from brewers yeast) 200 mcg Dosage: 1-2 tablets per day. Package size: 90 Form: tablets Composition Selenium, calcium dihydrogen phosphate, microcrystalline cellulose, magnesium stearate (lubricant). See other Webber Naturals products in the Antioxidants, Nutritional Supplements and Specialty Nutritional Supplements categories. 10 customers rated the product and 100% would recommend it. If you are not sure to choose this product, get inspired in the Selenium category.