Comparative Pharmacology
Head-to-head clinical analysis: CLOPRA versus VONTROL.
Peer-Reviewed Evidence
Head-to-head clinical analysis: CLOPRA versus VONTROL.
CLOPRA vs VONTROL
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Clopra (metoclopramide) is a dopamine D2 receptor antagonist and a 5-HT4 receptor agonist, enhancing gastrointestinal motility and having antiemetic effects via central and peripheral actions.
VONTROL (trimethobenzamide) acts centrally to inhibit the chemoreceptor trigger zone (CTZ) in the medulla oblongata, thereby suppressing nausea and vomiting. Its exact mechanism is not fully understood but may involve antagonism of dopamine D2 receptors and serotonin 5-HT3 receptors.
Clopra (metoclopramide) 10 mg orally or intramuscularly 30 minutes before meals and at bedtime; maximum 30 mg/day. For intravenous administration, give 10 mg over 1-2 minutes.
10 mg orally twice daily; maximum 20 mg/day.
None Documented
None Documented
Clinical Note
moderateMetoclopramide + Haloperidol
"The risk or severity of adverse effects can be increased when Metoclopramide is combined with Haloperidol."
Clinical Note
moderateMetoclopramide + Quinagolide
"The therapeutic efficacy of Quinagolide can be decreased when used in combination with Metoclopramide."
Clinical Note
moderateMetoclopramide + Cyclosporine
"Metoclopramide can cause an increase in the absorption of Cyclosporine resulting in an increased serum concentration and potentially a worsening of adverse effects."
Clinical Note
moderateTerminal elimination half-life 6-8 hours (prolonged in renal impairment; up to 20 hours in severe CKD)
12 hours; prolonged in renal impairment (up to 24 hours in ESRD)
Renal (50-70% as unchanged drug and metabolites); fecal (20-30%); biliary (minor ~5%)
Renal: 60% unchanged; fecal: 30% (biliary); hepatic metabolism: 10%
Category C
Category C
Antiemetic/Prokinetic Agent
Antiemetic
Metoclopramide + Clotrimazole
"The metabolism of Clotrimazole can be decreased when combined with Metoclopramide."