Paracetamol toxicity Biochemical Basis Lecture Clinical toxicity of Acetaminophen 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. Two chromatographic methods for analyzing paracetamol in spiked human plasma with its toxic metabolite, N acetyl parabenzoquinone imine and its antidote, N acetyl l cysteine Scientific Reports