L Glutathione vs. Glutathione: What's the Difference? Invigor Medical 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 Peroxidases in Plants: Innumerable Role in Abiotic Stress Tolerance and Plant Development Journal of Plant Growth Regulation Springer Nature Link 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, 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