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analgesic drug (trade name Talwin) that is less addictive than morphine

analgesic drug (trade name Talwin) that is less addictive than morphine

The first mixed agonist-antagonist analgesic to be marketed. It is an agonist at the kappa and sigma opioid receptors and has a weak antagonist action at the mu receptor. (From AMA Drug Evaluations Annual, 1991, p97)