Selenium is an essential trace element that activates one of the most important antioxidant enzymes in the bodys cells, responsible for protecting tissues from oxidative damage caused by free radicals. It is also necessary for the healthy functioning of the immune system. Enriched with vitamins A, C, E and zinc, providing a very strong antioxidant action. It is ideal for those exposed to pollutants and environmental chemicals, for smokers, for those who consume large amounts of alcohol and even for users of toxic substances.