Opioid Receptor Antagonists
- Previous year questions on Opioid Receptor Antagonists for NEET PG (National Eligibility cum Entrance Test - Postgraduate), from the Pharmacology section of the exam.
- Most questions here come from previous-year papers of Indian postgraduate medical entrance and licensing exams; where a paper and year are recorded the question carries them. The image-based questions are original vignettes written around an openly licensed figure, and were never asked in any exam.
- 11 live questions in Opioid Receptor Antagonists.
- 2 of 11 questions carry a verified exam year: 2017, 2019.
- Pharmacology is worth about 20 of 300 questions on the exam. See every subject’s weightage.
- Question set last updated 6 Sept 2026.
Q1.all the following drugs are central antagonist drugs used in opioid dependency except ?
- Analoxone
- Bnalmefene
- Cnaldemedine✓ Correct answer
- Dnaltrexone
Q2.Antidote for opioid poisoning;
- ANaloxone✓ Correct answer
- BPethidine
- CFlumazenil
- DPhysostigmine
Q3.A female in labor ward was administered opioid analgesic. Which of the following drugs should be kept ready for emergency?
- ALignocaine
- BNaloxone✓ Correct answer
- CDiphenhydramine
- DFentanyl
Q4.Best antagonist of Morphine
- APentazocine
- BBuprenorphine
- CNaloxone✓ Correct answer
- DNalorphine
Q5.Best antagonist of morphine is
- ANalorphine
- BNaloxone✓ Correct answer
- CBuprenorphine
- DPentazocine
Q6.Opioid antagonist that can be given orally –
- ANaltrexone✓ Correct answer
- BNaloxone
- CNalbuphene
- DPentazocine
Q7.All of these are the adverse effects of naloxone in the treatment of opioid poisoning except.
- AHypertension
- BPulmonary edema
- CSeizures✓ Correct answer
- DVentricular dysrhythmia
Q8.Naltrexone is used for which of the following poisoning?
- AHeroin✓ Correct answer
- BAtropine
- CCannabis
- DDiazepam
Q9.All of the following are true about opioids except ?
- ANaloxone is short acting
- BNaltrexone is used to lower craving in alcoholics
- CNalmefene can be used for opioid poisoning
- DNalmefene is shorter acting than naloxone✓ Correct answer
Q10.Which of the following statement is FALSE about Naltrexone ?
- AParenterally administered✓ Correct answer
- BUsed to prevent relapse of heavy drinking
- CLong acting
- DCause hepatotoxicity
Answer key
Q1: C. naldemedine; Q2: A. Naloxone; Q3: B. Naloxone; Q4: C. Naloxone; Q5: B. Naloxone; Q6: A. Naltrexone; Q7: C. Seizures; Q8: A. Heroin; Q9: D. Nalmefene is shorter acting than naloxone; Q10: A. Parenterally administered.
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