Opioid agonist-antagonist is :: (A) Pethidine, (B) Pantazocine, (C) Buprenorphine, (D) Methadone
Answer is B. Ans. is 'b' Pentazocine Opioid Agonist Antagonists Not used as analgesic - Nalorphine* levallorphan* Used as analgesic - Pentazocine* NalbuphinePure Opioid Antagonists :NaloxoneNaltrexonePartial weak agonistsBuprenorphineButorphanol