A quantum chemical study of the reactivity of acetaminophen (paracetamol) toxic metabolite N acetyl p benzoquinone imine with deoxyguanosine and glutathione ScienceDirect 3 Glutathione Rescue Normally, glutathione binds NAPQI and converts it into non toxic byproducts (cysteine + mercapturic acid) that are excreted. Example: Glutathione is your liver's safety net against toxins. Alcohol and paracetamol are both processed through the liver. Paracetamol can form a toxic metabolite called NAPQI, which the body usually neutralises safely. But factors like heavy alcohol use, repeated dosing, fasting, Tox and Hound Fellow Friday What Terror Hath NAPQI Wrought?