Glutathione is a naturally occurring molecule found in all living cells. It plays an important role as an antioxidant, helping to protect cells from damage caused by free radicals and other toxic substances. Glutathione is made up of three amino acids - cysteine, glutamate, and glycine – and is produced in the body by every cell. It has been called "the master antioxidant" because it helps protect cells from oxidative stress caused by environmental factors such as pollution, radiation, and toxic chemicals. Glutathione also plays a role in detoxification processes within the liver, where it binds with toxins and helps eliminate them from the body.