Comparative Pharmacology
Head-to-head clinical analysis: ORAP versus VESPRIN.
Peer-Reviewed Evidence
Head-to-head clinical analysis: ORAP versus VESPRIN.
ORAP vs VESPRIN
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Orap (pimozide) is a diphenylbutylpiperidine antipsychotic that selectively blocks dopamine D2 receptors in the central nervous system, with weak antagonism at alpha1-adrenergic and H1-histamine receptors. Its anti-dyskinetic effect in Tourette syndrome may also involve blockade of calcium channels.
Trifluoperazine is a typical antipsychotic that blocks postsynaptic D2 dopamine receptors in the mesolimbic pathway. It also has alpha-adrenergic blocking and anticholinergic effects.
Initial: 2 mg orally twice daily; maintenance: 2-10 mg twice daily. Maximum 20 mg/day.
10-50 mg intramuscularly every 4-6 hours as needed; oral: 25-50 mg every 4-6 hours
None Documented
None Documented
Clinical Note
moderateVorapaxar + Tranilast
"Vorapaxar may increase the anticoagulant activities of Tranilast."
Clinical Note
moderateVorapaxar + Resveratrol
"Vorapaxar may increase the anticoagulant activities of Resveratrol."
Clinical Note
moderateVorapaxar + Nimesulide
"Vorapaxar may increase the anticoagulant activities of Nimesulide."
Clinical Note
moderateVorapaxar + Epoprostenol
"Vorapaxar may increase the antiplatelet activities of Epoprostenol."
Terminal elimination half-life is 20–40 hours (mean 27 hours). Steady-state achieved in 4–7 days.
Terminal elimination half-life ranges from 1 to 2.5 hours, with a mean of approximately 1.5 hours. Due to its short half-life, multiple daily dosing is required to maintain therapeutic levels, and the drug is rapidly cleared after discontinuation.
Primarily hepatic metabolism; approximately 40% excreted in urine as metabolites, 15% in feces as unchanged drug and metabolites.
Primarily hepatic metabolism with metabolites excreted in urine and feces. Approximately 20-30% of a single dose is excreted unchanged in urine, with the remainder as metabolites in urine (30-40%) and feces (20-30%).
Category C
Category C
Antipsychotic
Antipsychotic