Glutathione is a highly studied molecule and sets the standard for antioxidants. It is a naturally-occurring peptide which is composed of 3 amino acids: cysteine, glutamate and glycine. It is produced by all cells, including immune cells. Glutathione is a powerful antioxidant and key to almost all body functions. It protects the body from free radicals, which are abundant in our environment. Glutathione slows the signs of aging; detoxifies the liver and blood cells and plays a vital role in our immune system.