Comparative Pharmacology
Head-to-head clinical analysis: PERCOCET versus ROXICET 5 500.
Peer-Reviewed Evidence
Head-to-head clinical analysis: PERCOCET versus ROXICET 5 500.
PERCOCET vs ROXICET 5/500
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Oxycodone is a mu-opioid receptor agonist, inhibiting ascending pain pathways and altering pain perception and emotional response. Acetaminophen inhibits cyclooxygenase (COX) in the CNS, reducing prostaglandin synthesis and exerting analgesic and antipyretic effects.
Oxycodone is a full opioid agonist that binds to mu-opioid receptors in the CNS, inhibiting ascending pain pathways and altering pain perception. Acetaminophen inhibits cyclooxygenase (COX) enzymes, primarily in the CNS, reducing prostaglandin synthesis and producing analgesic and antipyretic effects.
One tablet (5 mg oxycodone/325 mg acetaminophen) every 6 hours as needed for pain; maximum 12 tablets per day.
1-2 tablets (5-10 mg oxycodone / 325-650 mg acetaminophen) orally every 4-6 hours as needed for pain; maximum 12 tablets per day (60 mg oxycodone / 6000 mg acetaminophen) in 24 hours.
None Documented
None Documented
Oxycodone: 3.5–4.5 hours (terminal) in normal renal function; prolonged in hepatic/renal impairment (up to 6–12 hours). Acetaminophen: 2–3 hours (terminal) in overdose, extended with hepatic injury.
Oxycodone: 3-5 hours (immediate-release); Acetaminophen: 2-3 hours. In hepatic impairment, oxycodone half-life prolonged (up to 12-15 hours).
Oxycodone: primarily renal (up to 19% as unchanged drug, 50% as noroxycodone and oxymorphone metabolites); about 10% biliary/fecal. Acetaminophen: renal (majority as glucuronide and sulfate conjugates, about 5% unchanged).
Oxycodone: primarily hepatic metabolism to noroxycodone, oxymorphone, and conjugates; renal elimination of metabolites (about 60-87% as unchanged and metabolites), fecal < 10%. Acetaminophen: renal elimination of conjugates (90-100%), <5% unchanged.
Category C
Category C
Opioid Analgesic Combination
Opioid Analgesic Combination