Comparative Pharmacology
Head-to-head clinical analysis: BELDIN versus CLARINEX D 24 HOUR.
Peer-Reviewed Evidence
Head-to-head clinical analysis: BELDIN versus CLARINEX D 24 HOUR.
BELDIN vs CLARINEX D 24 HOUR
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Selective histamine H1 receptor antagonist; inhibits histamine-mediated allergic and inflammatory responses.
Desloratadine is a long-acting tricyclic histamine antagonist with selective peripheral H1-receptor antagonist activity. Loratadine is a long-acting antihistamine that selectively antagonizes peripheral H1-receptors.
1 capsule (200 mg) orally every 12 hours.
1 tablet (5 mg desloratadine/120 mg pseudoephedrine) orally once daily
None Documented
None Documented
Terminal half-life: 8-12 hours (average 10 hours); prolonged in hepatic impairment (up to 24 h) and severe renal impairment (up to 18 h).
Desloratadine: terminal t1/2 27 hours (range 20-50h) supporting once-daily dosing. Pseudoephedrine: t1/2 5-8 hours (up to 16h in alkaline urine).
Renal: 30-50% unchanged; hepatic metabolism: 50-70% (CYP3A4); biliary/fecal: 10-20%.
Desloratadine: ~87% excreted as metabolites (41% urine, 43% feces), <2% unchanged. Pseudoephedrine: ~70-90% excreted unchanged in urine.
Category C
Category C
Antihistamine
Antihistamine/Decongestant Combination