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. Can Tylenol (acetaminophen) deplete glutathione levels in the body? Does Acetaminophen Deplete Glutathione? Understanding the Connection Cymbiotika CYMBIOTIKA Tylenol and glutathione, actually explainedhere's the bullet points: * Lots of concern raised on social media re: glutathione depletion and acetaminophen use * Glutathione is used in the metabolism of acetaminophen and Sex differences in glutathione metabolism and acetaminophen toxicity