Comparative Pharmacology
Head-to-head clinical analysis: ULTRAM versus ZIPAN 25.
Peer-Reviewed Evidence
Head-to-head clinical analysis: ULTRAM versus ZIPAN 25.
ULTRAM vs ZIPAN-25
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Tramadol is a centrally acting synthetic opioid analgesic that binds to μ-opioid receptors and inhibits norepinephrine and serotonin reuptake.
Selective serotonin reuptake inhibitor (SSRI); potentiates serotonergic activity by blocking serotonin reuptake into presynaptic neurons.
50-100 mg orally every 4-6 hours as needed for pain; maximum 400 mg/day (for extended-release: 100 mg once daily, titrated up to 300 mg once daily).
25 mg orally twice daily
None Documented
None Documented
Tramadol: ~6 hours; M1 metabolite (O-desmethyltramadol): ~7 hours; prolonged in renal/hepatic impairment
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).
Renal: ~90% (tramadol and metabolites; conjugated metabolites are major), 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