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GLUTATHIONE, a naturally occurring protein, is called a peptide. It is composed of three amino acids: glycine, glutamine and cysteine. Cysteine contains sulfur and gives glutathione its sulfuric aroma. It also plays a major role in glutathione’s antioxidant and detoxification functions. With its anti-inflammatory properties, glutathione is considered a “key antioxidant” in the functioning of cells. Antioxidant means it helps prevent oxidative stress. OXIDATIVE STRESS Oxidation in the outside world is the chemical mechanism that causes rust. Inside the body oxidation damage, called oxidative stress, causes damage to the proteins that keep the cells and their membranes running. Oxidative stress refers to toxins produced inside the body (free radicals) and those from without, which are often caused by the environment. (Air pollution, heavy metals, cigarette smoke, radiation, drugs) Glutathione plays a critical role in defending cells again this oxidative stress. Therefore, a deficiency of glutathione plays a key role in aging and many disease states. SHIP WITH ICE PAK.