Glutathione: The Master Antioxidant Core Med Science Glutathione is such a critical soldier in our line of defense that our bodies make it themselves. We even have mechanisms that recycle and reuse it. But what happens when our toxic Glutathione: Body's Defender and Function Biom Probiotics 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 Glutathione Participation in the Prevention of Cardiovascular Diseases