I’ve been eating a lot lately so sometimes I forgot to drink vitamins and count my calories. Glutathione is a substance produced naturally by the liver. It is also found in fruits, vegetables, and meats. Glutathione is thought to offer antioxidant effects, as well as stimulate the immune system. Proponents claim that glutathione supplements can help treat and prevent a number of health conditions.Also, glutathione is marketed for their supposed skin-whitening effects. These products include soaps and creams. However, some people take glutathione supplements for skin-whitening.