Comparative Pharmacology
Head-to-head clinical analysis: CETIRIZINE versus DISOMER.
Peer-Reviewed Evidence
Head-to-head clinical analysis: CETIRIZINE versus DISOMER.
Cetirizine vs DISOMER
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Cetirizine is a selective second-generation H1-receptor antagonist that inhibits histamine release from mast cells and basophils, thereby reducing allergic symptoms.
Selective dopamine D2 receptor antagonist; also blocks alpha-1 adrenergic, histamine H1, and muscarinic M1 receptors.
10 mg orally once daily; 5 mg orally once daily for mild symptoms
Adults: 1 mg orally once daily.
None Documented
None Documented
Terminal elimination half-life is approximately 8.3 hours in healthy adults; extended to 20 hours in elderly and patients with renal impairment
Clinical Note
moderateCetirizine + Fluticasone propionate
"The risk or severity of adverse effects can be increased when Cetirizine is combined with Fluticasone propionate."
Clinical Note
moderateLevocetirizine + Sulfisoxazole
"The metabolism of Sulfisoxazole can be decreased when combined with Levocetirizine."
Clinical Note
moderateLevocetirizine + Erythromycin
"The metabolism of Erythromycin can be decreased when combined with Levocetirizine."
Clinical Note
moderateLevocetirizine + Cyclosporine
12–15 hours in adults with normal renal function; prolonged to 30–40 hours in severe renal impairment (CrCl <30 mL/min).
Primarily renal (60% unchanged in urine); minor biliary/fecal (10%)
Renal: 80% as unchanged drug; biliary/fecal: 15% as metabolites; <5% unchanged in feces.
Category A/B
Category C
Antihistamine
Antihistamine
"The metabolism of Cyclosporine can be decreased when combined with Levocetirizine."