Comparative Pharmacology
Head-to-head clinical analysis: OXYCONTIN versus ZIPAN 25.
Peer-Reviewed Evidence
Head-to-head clinical analysis: OXYCONTIN versus ZIPAN 25.
OXYCONTIN vs ZIPAN-25
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 with oxycodone. Clinically, dosage is titrated to provide adequate analgesia and may be limited by adverse reactions, including respiratory and CNS depression.
Selective serotonin reuptake inhibitor (SSRI); potentiates serotonergic activity by blocking serotonin reuptake into presynaptic neurons.
10 mg orally every 12 hours; titrate based on pain severity and prior opioid exposure.
25 mg orally twice daily
None Documented
None Documented
4.5-5.0 hours (immediate-release); controlled-release OXYCONTIN has an apparent half-life of 4.5-8.7 hours. Terminal half-life is ~3.5-4 hours for immediate-release, reflecting context-sensitive elimination.
Terminal elimination half-life: 6-8 hours in adults; may be prolonged (up to 12 hours) in elderly or patients with renal impairment (CrCl <30 mL/min).
Primarily renal (90% as metabolites, 10% unchanged). Also biliary/fecal (10%).
Primarily renal excretion of unchanged drug (70-80%); fecal elimination accounts for 15-20% via biliary excretion; less than 5% as metabolites.
Category C
Category C
Opioid Analgesic
Opioid Analgesic