Comparative Pharmacology
Head-to-head clinical analysis: DESLORATADINE versus DEXCHLORPHENIRAMINE MALEATE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: DESLORATADINE versus DEXCHLORPHENIRAMINE MALEATE.
DESLORATADINE vs DEXCHLORPHENIRAMINE MALEATE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Desloratadine is a long-acting tricyclic histamine antagonist selective for the H1 receptor, inhibiting histamine release from mast cells and basophils. It reduces allergic inflammation by decreasing cytokine and chemokine release.
Dexchlorpheniramine maleate is a histamine H1 receptor antagonist that competitively blocks the effects of histamine at peripheral H1 receptors, reducing symptoms of allergic reactions such as vasodilation, increased vascular permeability, and smooth muscle contraction. It also has anticholinergic and sedative properties.
5 mg orally once daily.
2 mg orally every 4-6 hours; maximum 12 mg/day
None Documented
None Documented
Clinical Note
moderateDexchlorpheniramine maleate + Haloperidol
"The metabolism of Haloperidol can be decreased when combined with Dexchlorpheniramine maleate."
Clinical Note
moderateDexchlorpheniramine maleate + Sulfisoxazole
"The metabolism of Sulfisoxazole can be decreased when combined with Dexchlorpheniramine maleate."
Clinical Note
moderateDexchlorpheniramine maleate + Erythromycin
"The metabolism of Erythromycin can be decreased when combined with Dexchlorpheniramine maleate."
Clinical Note
moderateTerminal half-life 27 hours (range 21–30 h) in healthy adults; supports once-daily dosing.
Terminal elimination half-life is 20-24 hours in healthy adults, allowing once or twice daily dosing. Prolonged in hepatic impairment or elderly.
Primarily renal (87% as metabolites, ~41% unchanged) and fecal (~9%). Metabolized to active 3-hydroxydesloratadine.
Primarily renal (approximately 70-80% as unchanged drug and metabolites, mainly glucuronide conjugates); minor biliary/fecal elimination (20-30%).
Category A/B
Category C
Antihistamine
Antihistamine
Dexchlorpheniramine maleate + Cyclosporine
"The metabolism of Cyclosporine can be decreased when combined with Dexchlorpheniramine maleate."