Levallorphan

**Definition:** 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)

**Tree numbers:** - D03.132.577.249.413 - D03.605.497.429 - D03.633.400.686.429 - D04.615.723.795.413

**Synonyms:** - Naloxiphan