Comparative Pharmacology
Head-to-head clinical analysis: METOZOLV ODT versus PROMETHAZINE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: METOZOLV ODT versus PROMETHAZINE.
METOZOLV ODT vs PROMETHAZINE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Selective 5-HT3 receptor antagonist; blocks serotonin action at vagal nerve terminals and in the chemoreceptor trigger zone, inhibiting emetic reflex.
Promethazine is a phenothiazine derivative that acts as a potent histamine H1 receptor antagonist, thereby blocking the effects of histamine. It also has central anticholinergic, antiemetic, and sedative properties, likely mediated through antagonism at muscarinic, dopamine D2, and serotonin receptors in the brain.
2.5 mg to 5 mg orally once daily, as disintegrating tablet; may increase to 10 mg if needed
12.5-25 mg IM or IV every 4-6 hours; also 25 mg PO or PR every 6-8 hours. Maximum 100 mg/day.
None Documented
None Documented
Clinical Note
moderatePromethazine + Risedronic acid
"Promethazine can cause an increase in the absorption of Risedronic acid resulting in an increased serum concentration and potentially a worsening of adverse effects."
Clinical Note
moderatePromethazine + Methylphenidate
"Promethazine can cause an increase in the absorption of Methylphenidate resulting in an increased serum concentration and potentially a worsening of adverse effects."
Clinical Note
moderatePromethazine + Artesunate
"The serum concentration of Artesunate can be increased when it is combined with Promethazine."
Clinical Note
moderate~1.5–2 hours in normal renal function; prolonged to 10–20 hours in severe renal impairment (CrCl <30 mL/min).
Terminal elimination half-life 9-16 hours; may be prolonged in hepatic impairment.
Renal: ~70% as unchanged drug; biliary/fecal: ~30% as metabolites and unchanged drug.
Renal (70-80% as metabolites, <1% unchanged); biliary/fecal minor.
Category C
Category A/B
Antiemetic
Antihistamine / Antiemetic
Promethazine + Clotrimazole
"The metabolism of Clotrimazole can be decreased when combined with Promethazine."