Glutathione, a tripeptide found in virtually all cells, functions as a reducing agent. The structure of glutathione is: What amino acids make up glutathione? Homework.Study.com Liver 3 Frontiers Metabolism of Amino Acids in Cancer You've probably heard of antioxidants, but did you know that glutathione is one of the MOST powerful ones your body makes? It's working 24 7 to detoxify your cells, protect against oxidative stress, Glutathione Synthase an overview ScienceDirect Topics