Glutathione is a small molecule made up of three amino acids, which exists in almost every cell of the body. However, Glutathione, must be generated within the cell from its precursors before it can work effectively in the body.

The presence of glutathione is required to maintain the normal function of the immune system. It is known to play a critical role in the multiplication of lymphocytes (the cells that mediate specific immunity) which occurs in the development of an effective immune response.

Furthermore, the cells of the immune system produce many oxiradicals as a result of their normal functioning, resulting in a need for higher concentrations of antioxidants than most cells. Glutathione plays a crucial role in fulfilling this requirement.