Data summary: IL 4 regulates glutathione levels in the liver and lung Download Scientific Diagram Acetaminophen Pathway (toxic doses), Pharmacokinetics Tylenol's Impact on Glutathione and Liver Damage Myth busting, Acetaminophen version. "Avoid Acetaminophen (Tylenol) because it causes glutathione depletion". Truth?? As a pediatrician and ER doctor and as moms we're often asked about this. And we understand why: Yes there is good evidence that acetaminophen (the active ingredient in Tylenol) can deplete glutathione under certain conditions. But whether that matters depends on dose, duration, and individual factors.