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 Electrochemical evidences in oxidation of acetaminophen in the presence of glutathione and N acetylcysteine Chemical Communications (RSC Publishing) PDF] Evidence that Increased Acetaminophen use in Genetically Vulnerable Children Appears to be a Major Cause of the Epidemics of Autism, Attention Deficit with Hyperactivity, and Asthma Semantic Scholar 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. NAPQI Alchetron, The Free Social Encyclopedia