Nutrition and Supplements Vitamins and minerals Cantabria Labs Selenium NM 90 Capsules It's a selenium-based dietary supplement. Selenium is an essential trace mineral that the body cannot produce and must therefore be supplied through the diet. Benefits: The normal functioning of the immune system Protecting cells from oxidative damage Normal thyroid function Normal spermatogenesis Maintaining hair and nails in normal condition The correct development of the immune and hormonal system