This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
[{'content': 'all the following drugs are central antagonist drugs used in opiod dependency except ? \nSelect and explain. \nA. nalaxone, B. nalmefene, C. naldemedine, D. naltraxone', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Opioid Antagonists * Naloxone is an example of a opioid antagonist. * It is administered intravenously. * It can rapidly produce the withdrawal symptoms associated with opioid addiction. * Naltrexone is another example of an opioid antagonist. It is more potent than Naloxone and is used i the treatment of alcohol addiction but its mechanism in this treatment is unknown. PERIPHERAL ANTAGONISTS NALOXEGOL ALVIMOPAN NALDEMEDINE (PAMORA). ref : kd tripathi 8th ed', 'role': 'assistant'}]