an opioid peptide produced in the brain, used as a form of pain relief and in the treatment of cocaine addiction
the opioid peptide dynorphin, known as the 'evil cousin' of endorphin, which is responsiblefor 'runner's high'. Like endorphin, dynorphin is also a pain killer, but it makesyou feel lousy rather than good.
b.
(as modifier)
dynorphin blockers
dynorphin in American English
(daɪˈnɔrfɪn)
noun
any of a group of brain peptides that are powerful pain relievers: though similar to endorphins, they differ in derivation, effectiveness, etc.