Best Selling Liquid Ionic Minerals Selenium Ultra Concentrate Mineral Supplement This product was designed to provide a powerful antioxidant selenium that can help support your body from the inside out. Antioxidants! Just saying it feels good! Selenium works with Vitamin E in metabolic functions, supports healthy fertility, encourages tissue elasticity, and is a potent antioxidant, which gives your body support when toxic metals appear. And as we all know, it’s crucial for the proper functioning of heart muscles.