This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine
[{'content': 'What is the effective antodote for acetaminophen overdose in a 28 year old suicidal patient? \nSelect and explain. \nA. N-Acetyl cysteine, B. N-Glycolamine, C. Penicillamine, D. Fomipezole', 'role': 'user'}, {'content': 'Answer: A \nExplanation: N-acetylcysteine is used as an effective antidote for acetaminophen overdose. In acetaminophen overdose, N-acetylcysteine, a sulfhydryl-containing acetaminophen-specific antidote, replenishes hepatic stores of glutathione by acting as a glutathione surrogate, combining directly with reactive acetaminophen metabolites and preventing hepatic damage. N-acetylcysteine should be initiated within 10 hours of actaminophen overdose to achieve optimum results.', 'role': 'assistant'}]