glutathione long term use safety Randomized Clinical Trial of How Long-Term Supplementation Offers Protection from Oxidative Damage and Improves HbA1c in Elderly Type 2 Diabetic Patients Glutathione! - PMC
Description
Although oral GSH supplementation has poor bioavailability [4], N-Acetyl Cysteine (NAC) has been shown to successfully raise plasma glutathione levels in those with schizophrenia [5]

But when levels are actually low, we recommend seeing a doctor, checking for pernicious anaemia if you eat meat and diary and also checking your folate level

Phytomedicine 113 , 154539 (2023)
Furthermore, processes that are detrimental to the proper functioning of the brain may be affected due to the increased oxidative stress-related damage and neuroinflammation, leading to altered neuronal signaling and inhibition of neurogenesis
