Glutathione: Benefits and Supplements Use Antioxidants to Protect Yourself from Free Radical Damage Ask The Scientists 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 is known as the master antioxidant. This critical compound protects cells from damage caused by free radicals and toxins, supports detoxification, plays a key role in DNA synthesis and repair, Glutathione or GSH is an antioxidant in plants, animals, fungi, and some bacteria and archaea. 3d illustration Stock Photo Alamy