If you drink even moderately or have ever been told your liver enzymes look fine, GGT is the number worth understanding. Gamma glutamyl transferase is an enzyme involved in glutathione metabolism The oral administration of Lacticaseibacillus casei Shirota alleviates acetaminophen induced liver injury through accelerated acetaminophen metabolism via the liver gut axis in mice mSphere Glutathione Metabolism and Its Implications for Health ScienceDirect Downregulation of Glutathione Biosynthesis Contributes to Oxidative Stress and Liver Dysfunction in Acute Kidney Injury Shang 2016 Oxidative Medicine and Cellular Longevity Wiley Online Library Gamma glutamyl transferase (GGT), Glutamyl Transpeptidase A single Glutathione IV drip gives you two amazing benefits at once. This powerful master antioxidant helps detox your liver while also working to brighten your skin from the inside out.