Mode of action of Glutathione Amino acid Precursors (GAP) and functions Download Scientific Diagram Glutathione is such an important antioxidant in human physiology, meaning it acts to combat oxidative stress. Strategies for increasing glutathione include: Consume sulfur rich foods like cruciferous vegetables Ensure you get Optimizing Glutathione's Component Amino Acids Without Supplements 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