TJ. Glutathione peroxidase is an important enzyme in cellular antioxidant defense systems, detoxifying peroxides and hydroperoxides. As a component of the glutathione cycle, it protects the liver from reactive oxygen metabolites. Selenocysteine Tri Fortify Liposomal Glutathione Researched Nutritionals Oxidative stress: the big issue Igennus Healthcare Nutrition Fig. 4. Glow & Renew Duo: NAD+ & Glutathione, 12 Month Supply GLUTATHIONEtrying to learn more about it ** **The Methylation Cycle: ** After the methyl group gets transferred from L Methylfolate to the enzyme MTRR it is attached to "naked" B12 and this produces