What is "dezocine"

n. (context pharmaceutical drug English) A particular narcotic painkiller.

Dezocine ( INN, USAN) (brand name Dalgan) is a marketed opioid analgesic of the benzomorphan group. First synthesized in 1970, it acts at mu-, delta-, and kappa-opioid receptors. Dezocine is a mixed agonist/ antagonist of opioid receptors. It is related to other benzomorphans such as pentazocine, with a similar profile of effects that include analgesia and euphoria. Unlike many other benzomorphans however, it is a silent antagonist of the κ-opioid receptor, and in accordance, does not produce side effects such as dysphoria or hallucinations at any dose.