Comparative Pharmacology
Head-to-head clinical analysis: PERCODAN versus PROPOXYPHENE HYDROCHLORIDE AND ACETAMINOPHEN.
Peer-Reviewed Evidence
Head-to-head clinical analysis: PERCODAN versus PROPOXYPHENE HYDROCHLORIDE AND ACETAMINOPHEN.
PERCODAN vs PROPOXYPHENE HYDROCHLORIDE AND ACETAMINOPHEN
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Oxycodone is a full opioid agonist with relative selectivity for the mu-opioid receptor, although it can bind to other opioid receptors at higher doses. The principal therapeutic action of oxycodone is analgesia. Like all full opioid agonists, there is no ceiling effect for analgesia. Oxycodone acts on the central nervous system (CNS) to produce analgesia. Aspirin inhibits cyclooxygenase, leading to decreased prostaglandin synthesis, which reduces pain and inflammation.
Propoxyphene is a mu-opioid receptor agonist; acetaminophen inhibits cyclooxygenase (COX) and modulates central pain pathways.
1-2 tablets orally every 4-6 hours as needed for pain. Each tablet contains oxycodone 4.5 mg and aspirin 325 mg.
One tablet (propoxyphene HCl 65 mg/acetaminophen 650 mg) orally every 4 hours as needed for pain; maximum: 6 tablets per day.
None Documented
None Documented
Oxycodone: 3-5 hours, prolonged in elderly, hepatic/renal impairment. Aspirin: 2-3 hours at low doses; 15-30 hours at anti-inflammatory doses due to saturable metabolism.
Propoxyphene: 6-12 h (prolonged in hepatic disease); Norpropoxyphene (active metabolite): 30-36 h (accumulation risk). Acetaminophen: 2-3 h (prolonged in hepatic disease).
Oxycodone: primarily renal (65-87% as parent and metabolites, mostly noroxycodone and oxymorphone conjugates); ~10% fecal. Aspirin: renal (75-90% as salicylates and metabolites, dose-dependent).
Renal: Propoxyphene ~20-25% as unchanged drug and metabolites; Acetaminophen ~85-90% as glucuronide and sulfate conjugates, <5% unchanged. Fecal: Minimal for both.
Category C
Category C
Opioid Analgesic Combination
Opioid Analgesic Combination