Is Tylenol Safe During Pregnancy? Understanding Risk Factors Seeking Health 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. View of Acetaminophen, the missing anion gap in the patient with metabolic acidosis The Southwest journal of medicine 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 Acetaminophen toxicity EMCrit Project