GGT breaks the gamma glutamyl bond of glutathione to eventually form Download Scientific Diagram , ' ! , Stay bright and protected with the ultimate summer shield: + , While most focus only on surface Oral administration of glutamylcysteine increases intracellular glutathione levels above homeostasis in a randomised human trial pilot study ScienceDirect Novel Antioxidant Therapy with the Immediate Precursor to Glutathione, Glutamylcysteine (GGC), Ameliorates LPS Induced Cellular Stress in In Vitro 3D Differentiated Airway Model from Primary Cystic Fibrosis Human Bronchial Cells Metabolic orchestration driven by GGCT: diverting glutamine to glutathione biosynthesis while enhancing glucose anaplerosis for tumor proliferation Cell Death & Disease