Glutathione is such a critical soldier in our line of defense that our bodies make it themselves. We even have mechanisms that recycle and reuse it. But what happens when our toxic Frontiers Exogenous glutathione reverses meropenem resistance in carbapenem resistant Klebsiella pneumoniae Reactive metabolic byproducts contribute to antibiotic lethality under anaerobic conditions: Molecular Cell Exogenous glycine promotes oxidation of glutathione and restores sensitivity of bacterial pathogens to serum induced cell death ScienceDirect Ask the Doctors What do glutathione supplements do? UCLA Health