What is Glutathione and How Do I Get More of It? Mark Hyman, MD Glutathione: The Master Antioxidant Glutathione is often called the body's "master antioxidant" and for good reason. This powerful tripeptide (made from cysteine, glycine, and glutamate) is produced naturally in your cells, Phosphatidylserine Pronunciation Glutathione 8 pronunciations of Glutathione in British English Glutathione the Master Antioxidant