Is Glutathione the Master Antioxidant? Heres What Science Says 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 What is Glutathione? GoldBio Glutathione is an antioxidant that's made up of the three amino acidsglutamine, glycine, and cysteineall of which are rich in the mineral sulfur. The main functions of glutathione are to fend off Glutathione: What It Is, Why You Need It, How You Can Increase It The Amino Company WHAT IS GLUTATHIONE AND WHERE IS IT PRODUCED? Glutathione is a substance made from the amino acids: glycine, cysteine and glutamic acid. It is produced by the liver. FUNCTIONS OF GLUTATHIONE: It