Glutathione, or GSH, is a naturally occurring protein that protects every cell, tissue, and organ from toxic free radicals and diseases. The supplement contains three amino acids: glycine, glutamate (glutamic acid) and cysteine. GSH supplements contain a high concentration of cysteine and have many of the same proteins found in breast milk which enhances immune system function. Glutathione can help repair damaged cells caused by stress, radiation, pollution, infection and a host of other ailments. Throughout the stages of aging, cells begin to lose their ability to repair themselves and produce strong antioxidants. Benefiting your body with glutathione supplements increases levels of this naturally occurring antioxidant.