Frontiers Glutamine metabolism and ammonia death: targeted modulation for enhanced cancer immunotherapy Glutathione Amino Acids: Why Supplements May Not Work Critical Roles of the CysteineGlutathione Axis in the Production of Glutamyl Peptides in the Nervous System Understanding the Difference Between L Glutamine and Glutathione: What You Need to Know Cymbiotika CYMBIOTIKA Benefits of Glutathione." Glutathione is a compound involved as a coenzyme in oxidationreduction reactions in cells. It is a tripeptide derived from 3 amino acids: Cysteine, glutamate (from glutamic acid), and glycine.