Even if short-term studies report no safety concerns, they would not be designed to detect longer-term risks like cancer or abnormal tissue growth, which may take years to emerge
Oregon State University
There are 2 steps in the synthesis of glutathione: The enzyme glutamate-cysteine ligase (CGL) combines with glutamate and cysteine to form -glutamylcysteine
(PubMed) Stop further injections and report the event to the clinic and your national drug safety authority (e.g., FDA in the US, local health regulator)
Watch for warning signs : Contact your licensed provider if you notice persistent redness, swelling, bruising, warmth, pus or other signs of infection, as well as any unexpected side effects
No, NICE guidance does not recommend glutathione supplementation for non-alcoholic fatty liver disease (NAFLD), and it is not part of standard NHS treatment protocols