According to WebMD, there are no side effects when taking glutathione by mouth, inhalation or injection into the muscles or veins of healthy individuals. In those with asthma, it can create an increase in asthma symptoms when used as an inhalation, and this should therefore be avoided. As of 2014, there is not enough evidence regarding the use of glutathione while pregnant or breastfeeding, and this should be avoided.Continue Reading
Produced naturally by the liver, glutathione, is also found in some fruits, vegetables and meats, according to WebMD. Glutathione is used as an injection in the muscle to counteract the poisoning effects on the body from chemotherapy, and it is used intravenously to treat Parkinson's disease, decrease hardening of the arteries and prevent anemia in patients undergoing hemodialysis.
When taken by mouth, glutathione is helpful in treating and preventing cataracts, glaucoma, alcoholism, asthma, cancer and heart disease, according to WebMD. It is also used to help build the body's immune system and to fight various kinds of metal or drug poisoning. When inhaled, glutathione is used to treat lung conditions, such as cystic fibrosis, idiopathic pulmonary fibrosis and lung disease. Glutathione works by performing tissue building and repair, and creating chemicals and proteins needed for proper body function.Learn more about Side Effects