Individuals at Risk for COPD Journal of COPD Foundation Glutathione and glutamate levels in the diaphragm of patients with chronic obstructive pulmonary disease European Respiratory Society Lglutathione (GSH) is a tripeptide made of three amino acids (glutamate, cysteine and glycine) and is the body's main intracellular antioxidant. It neutralizes harmful oxygenbased molecules, protects proteins and cellular machinery from Oxidative stress and airway inflammation in severe exacerbations of COPD Thorax Glutathione: Master Antioxidant, Reducing Oxidative Stress, and Detoxification Lung glutathione and oxidative stress: implications in cigarette smoke induced airway disease American Journal of Physiology Lung Cellular and Molecular Physiology American Physiological Society