The Acetaminophen Molecule Tylenol Tylenol depletes something called glutathione. Glutathione is a master antioxidant and your first line of protection against environmental toxins. It detoxifies and protects your cells. It protects your immune system and TYLENOL [Acetaminophen] metabolism A lot of GLUTATHIONE is needed to deal with the Oxidative Stress generated by the CYP 450 metabolism of Tylenol. When people go to the ER for Tylenol Overdose Acetaminophen toxicity EMCrit Project 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. Acetaminophen Toxicity: How Genetic Susceptibility Combines with Environmental Factors