Catabolism of extracellular glutathione supplies cysteine to support tumours Nature Liposomal Glutathione Uses and Benefits BodyBio 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 Most people are spending money on Glutathione supplements that your gut destroys before they ever reach your cells. Here's what the science actually says: Your body is designed to MAKE glutathione