Comparative Pharmacology
Head-to-head clinical analysis: LEVO DROMORAN versus OPANA.
Peer-Reviewed Evidence
Head-to-head clinical analysis: LEVO DROMORAN versus OPANA.
LEVO-DROMORAN vs OPANA
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Levo-dromoran (levorphanol) is a potent opioid agonist primarily at mu-opioid receptors, with additional agonist activity at kappa and delta opioid receptors. It also acts as an NMDA receptor antagonist and inhibits serotonin and norepinephrine reuptake, contributing to its analgesic effects.
Mu-opioid receptor agonist; produces analgesia by binding to opioid receptors in the CNS, inhibiting ascending pain pathways and altering pain perception.
2 mg orally every 6-8 hours as needed for pain; 2-4 mg intramuscularly or subcutaneously every 6-8 hours; intravenous administration: 1-2 mg slowly (over 2-3 minutes) every 6-8 hours.
5-20 mg orally every 4-6 hours as needed for pain; extended-release tablets: 5 mg orally every 12 hours, titrated up to 20 mg every 12 hours.
None Documented
None Documented
Terminal elimination half-life is 15-30 hours (mean 22 hours) in adults; prolonged in hepatic or renal impairment, requiring dose adjustment.
Terminal elimination half-life is 11-16 hours (mean 14 hours) in adults; prolonged in hepatic impairment (up to 30 hours) and elderly.
Primarily renal (approximately 60% as unchanged drug and metabolites); biliary/fecal elimination accounts for about 30%.
Primarily renal (approximately 90% as conjugated metabolites, 10% unchanged); biliary/fecal elimination accounts for <10%.
Category C
Category C
Opioid Analgesic
Opioid Analgesic