Glutathione facts: 1. Glutathione is an important antioxidant in the body that helps protect cells from damage caused by free radicals. It is found in almost every cell and is composed of Glutamine vs Glutathione Differences Invigor Medical Day 1 of 15: What is glutathione? As a nurse, I feel like this is something we don't really talk about enough but it connects to so much of what we see Glutathione Vs Glutamine Which is Better for Your Skin Health? Glutathione is a powerful antioxidant naturally produced by your body. Made up of three amino acidsglutamine, cysteine, and glycineit plays a critical role in protecting cells from damage,