En opioidantagonist med egenskaper liknande dem hos naloxon. Ämnet äger dessutom vissa agonistegenskaper. Det bör användas med försiktighet; levallorfan reverserar svår opioidframkallad andningsdepression, men kan förvärra andningsdepression framkallad av t ex alkohol eller andra icke-opioida, centralt verkande depressorsubstanser.
An opioid antagonist with properties similar to those of NALOXONE; in addition it also possesses some agonist properties. It should be used cautiously; levallorphan reverses severe opioid-induced respiratory depression but may exacerbate respiratory depression such as that induced by alcohol or other non-opioid central depressants. (From Martindale, The Extra Pharmacopoeia, 30th ed, p683)
Lorfan
Naloxiphan — Lorfan