GSH reduces NAPQI, the metabolite responsible for hepatotoxicity in acetaminophen toxicity. Toxic doses increase oxidation into NAPQI, overwhelming glutathione. How does ethanol interfere with acetaminophen metabolism? Image: https: t.co 6EY9dIwLXY Problem 2: N acetyl para benzoquinone (NAPQI) is an oxidized metabolite of acetaminophen formed in the liver. NAPQI is converted into an acetaminophen glutathione conjugate, a non toxic metabolite NAPQI an overview ScienceDirect Topics TYLENOL [Aetaminophen] metabolism Cyp 3A4 and 2E1: CYP3A4 is the major Cytochrome P 450 [Cyp] enzyme that catalyzes acetaminophen oxidation into NAPQI in human Phase I liver detox. The other Cyp enzyme Pharmacokinetic profile of metabolites by heart cutting two dimensional liquid chromatography: A focus on paracetamol analysis ScienceDirect Mechanisms of Hepatocyte Detoxification Abdominal Key