Selenium is a vital component of the bodys defense mechanisms against oxidative stress, plays a key role in the metabolism of thyroxine, is a valuable factor in the health of the reproductive system. For these reasons, its insufficient intake through the diet constitutes a serious nutritional deficiency. Lamberts has chosen the organic form of Seleno-L-Methionine of selenium due to its better absorption. Each tablet contains 200μg of Selenium which is twice the amount found in most products.