Selemite B is a high quality antioxidant supplement with organic selenium, a form more easily utilised by your body. Blackmores Selemite B provides a high selenium yeast that is rich in selenomethionine and other nutrients such as seleno amino acids. Selenomethionine is an organic form of selenium and that is more easily utilised and stored by the body than inorganic forms.Selenium is an essential mineral which is an important part of our antioxidant defence systems helping to protect our cells from free radical damage and oxidative stress. Antioxidants act as free-radical scavengers?. Free radicals are common in the body, arising through a variety of mechanisms. Some are generated in the body as part of normal energy-producing processes, some are generated by pollutants such as air pollution, and some are generated by lifestyle factors. Through its antioxidant activity, selenium is essential for healthy immune and cardiovascular systems and for healthy hormone production.