Correct Answer: B. N acetylcysteine (NAC) Why is this High Yield? Acetaminophen (Paracetamol) is widely used, making toxicity a common ER presentation. 1. Mechanism of Toxicity: Acetaminophen is metabolized in the liver. Perinatal exposure to paracetamol: Dose and sex dependent effects in behaviour and brain's oxidative stress markers in progeny ScienceDirect A 48 hour fast can turn standard Paracetamol into acute liver failure. Fasting depletes Glutathione, leaving the liver defenseless against toxic NAPQI. Review the latest guidelines on BMJ Best Practice: https: bestpractice.bmj.com topics en us 1010 Interleukin 4 deficiency protects mice from acetaminophen induced liver injury and inflammation by prevention of glutathione depletion Inflammation Research Springer Nature Link