Functions of glutathione in plants. GPX guaiacol peroxidase, Download Scientific Diagram What is glutathione? How to increase glutathione in the body? Glutathione is indeed the master antioxidant and is found in every cell in the body. It is made from the amino acids glycine, cysteine, and glutamic acid. . One unique thing Glutathione is nicknamed the master antioxidant because it is the most abundant, body produced (endogenous) antioxidant found in every cell, essential for neutralizing free radicals, recycling other antioxidants (like Vitamin C and E), Glutathione Deficiency Symptoms: Is Poor Sleep Just the Beginning? Cardiology & Neurology Specialists located in Queens, Forest Hills and Brighton Beach, Brooklyn, NY Advanced Medical Care