出典:Wikipedia
出典:『Wikipedia』 (2011/07/21 17:35 UTC 版)
Metazocine is an opioid analgesic related to pentazocine. While metazocine has significant analgesic effects, mediated through a mixed agonist-antagonist action at the mu opioid receptor, its clinical use is limited by dysphoric and hallucinogenic effects which are most likely caused by activity at kappa opioid receptors and sigma receptors.