Pharmacology Naltrexone is used to maintain abstinence following opioid withdrawal in addicts. It blocks all of the following features of opioid use, except: A Euphoriant effects of opioid B Craving for opioid C Miosis D Respiratory depression 💡 Explanation Naltrexone is used to maintain abstinence following opioid withdrawal in addicts. It blocks all of the following features of opioid use, except: ✓ Correct Answer: B. Craving for opioid