Glutatione En 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 Glutathione is the body's primary internal antioxidant, made using the amino acid cysteine, and it helps protect cells from oxidative stress. Beyond detoxification, research shows glutathione is involved in thyroid hormone metabolism, Yes glycine can be a surprisingly inexpensive, effective alternative to many overpriced collagen powders, but with some important nuances. Here's a clear breakdown of what glycine is, how it compares to Glutathione synthesis from glycine and glutamine; 'retro control' by Download Scientific Diagram