Comparative Pharmacology
Head-to-head clinical analysis: LODINE versus PROPOXYPHENE HYDROCHLORIDE W ASPIRIN AND CAFFEINE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: LODINE versus PROPOXYPHENE HYDROCHLORIDE W ASPIRIN AND CAFFEINE.
LODINE vs PROPOXYPHENE HYDROCHLORIDE W/ ASPIRIN AND CAFFEINE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Inhibition of prostaglandin synthesis via cyclooxygenase (COX) inhibition, with selectivity for COX-2 over COX-1.
Propoxyphene is a centrally acting opioid analgesic that binds to mu-opioid receptors. Aspirin inhibits cyclooxygenase (COX) enzymes, reducing prostaglandin synthesis. Caffeine is a CNS stimulant that may enhance analgesia.
200 to 400 mg orally every 6 to 8 hours as needed; maximum daily dose 1200 mg.
1-2 capsules orally every 4-6 hours as needed; maximum 6 capsules per day. Each capsule contains propoxyphene hydrochloride 65 mg, aspirin 325 mg, and caffeine 32.4 mg.
None Documented
None Documented
Terminal elimination half-life approximately 7.5 hours; in elderly or renal impairment, half-life may be prolonged up to 10 hours, requiring dose adjustment
Propoxyphene: 6-12 hours (up to 36 hours in overdose); norpropoxyphene: 30-36 hours. Aspirin: 2-3 hours for low doses, up to 15-30 hours in overdose. Caffeine: 3-6 hours; prolonged in liver disease.
Primarily renal (60% as metabolites, <1% unchanged); biliary/fecal (30-35%)
Renal elimination of propoxyphene and its metabolites (mainly norpropoxyphene) accounts for approximately 70-90% of the dose; fecal excretion is minimal (<10%). Aspirin is renally eliminated as salicylates (75-90% as conjugates, 10% free), while caffeine is primarily metabolized and its metabolites are excreted renally.
Category C
Category D/X
NSAID
NSAID / Antiplatelet