And somehow, every single product claims to be the best. So lets cut through all of that
The most cited clinical trial is the open-label MASLD pilot by Honda et al., in which 300 mg/day oral glutathione for 4 months reduced ALT and hepatic steatosis in 29 patients, but without histological or survival data and with no control arm (Honda et al., 2017)
There is much evidence that antioxidant team that covers glutathione reductase, catalase, glutathione peroxidase, superoxide dismutase, and glucose-6-phopshate destroy reactive oxygen species and other free radicals through enzymatic as well as nonenzymatic means
That does not make them risk-free
D., Bedaiwy, M
However, the study analyzed showed a reduction in oxidative stress even on blood lymphocytes without creating structural damage to the cell lines [27]