出典:Wiktionary
levorphanol (uncountable)
出典:Wikipedia
出典:『Wikipedia』 (2011/06/25 16:51 UTC 版)
Levorphanol (Levo-Dromoran) is an opioid medication used to treat severe pain. It is the laevorotary stereoisomer of the synthetic morphinan (Dromoran) and a pure opioid agonist, first described in Germany in 1948 as an orally active morphine-like analgesic. Morphinan is the parent drug and prototype of a large series of opioid and/or NMDA antagonists and opioid agonists used in medicine including nalbuphine, butorphanol, dextromethorphan, and others.