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Intravenous NAC is the standard of care, providing cysteine to regenerate glutathione (Smilkstein et al., N Engl J Med, 1988) [32]

So if something goes wrong and the GSSG accumulates, it inhibits an enzyme that relies on the correct oxidation of the ER environment to operate a protein quality control system. Moreover, they discovered, when misfolded proteins dont pass quality control, they wont get exported, so they too pile up in the ER

It carries one of the broadest published mechanistic literatures of any healing peptide, including a 2025 literature and patent review in Pharmaceuticals covering its angiogenesis and nitric-oxide effects, giving it a longer research track record than the other six compounds on this list