Glutathione is an essential antioxidant that prevents cell damage, which is caused by peroxides and free radicals in the body. It is a tripeptide - a protein which is made by three amino acid (cysteine, glycine and glutamic) bonds. There are two known forms of glutathione, namely oxidized type glutathione (dimmer) and reduced type glutathione (monomer). Oxidized type of glutathione gets active with the reductase enzyme, while reduced type glutathione is naturally active sort of glutathione. Glutathione is produced by every cell of the human body, including the immune system cells. It is also considered as the ultimate master antioxidant known to man since it protects the body from numerous health conditions.