The best sourse of organic selenium The absorption and utilization of organic selenium is much higher than the inorganic selenium, and the toxicity of organic selenium is much lower. Features â?? High organic selenium content: up to 2,000mg/kg; â?? Analysis results from French CNRS shows that the content of organic selenium is over 99%; â?? The bioavailability and safety of organic selenium is much higher than inorganic; â?? Used as selenium enhancer in dairy, rice products, biscuits and beverages etc.; â?? Best source of selenium in health foods; â?? Containing all the nutrients of yeast: high quality protein, vitamins, minerals, dietary fiber and essential amino acids for food/dietary supplements and functional foods.