Glutathione and the Cofactors Douglas Laboratories Hypo Selenium 200 mcg. Antioxidant Protection and Co Factor Support for Glutathione Peroxidase Selenium is one of the few nutrients that directly controls how your body handles oxygen at the cellular level. Every time your cells produce energy, they generate peroxides as a byproduct. That Selenium Drives a Transcriptional Adaptive Program to Block Ferroptosis and Treat Stroke Burke Neurological Institute Weill Cornell Medicine