Comparative Pharmacology
Head-to-head clinical analysis: MEZOFY versus PROMETHAZINE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: MEZOFY versus PROMETHAZINE.
MEZOFY vs PROMETHAZINE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
MEZOFY is a selective serotonin reuptake inhibitor (SSRI) that potentiates serotonergic activity in the CNS by inhibiting the reuptake of serotonin at the presynaptic neuronal membrane.
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.
MEZOFY (mexiletine) 200 mg orally every 8 hours; may increase to 300 mg every 8 hours 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
moderateTerminal half-life: 8-12 hours (mean 10 h); prolonged in renal impairment (up to 24 h in CrCl <30 mL/min)
Terminal elimination half-life 9-16 hours; may be prolonged in hepatic impairment.
Renal: 60% unchanged; biliary/fecal: 25% as metabolites; 15% other
Renal (70-80% as metabolites, <1% unchanged); biliary/fecal minor.
Category C
Category A/B
Antiemetic/Antivertigo
Antihistamine / Antiemetic
Promethazine + Clotrimazole
"The metabolism of Clotrimazole can be decreased when combined with Promethazine."