Comparative Pharmacology
Head-to-head clinical analysis: CLARINEX D 24 HOUR versus CLARITIN.
Peer-Reviewed Evidence
Head-to-head clinical analysis: CLARINEX D 24 HOUR versus CLARITIN.
CLARINEX D 24 HOUR vs CLARITIN
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
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.
Loratadine is a long-acting tricyclic antihistamine with selective peripheral H1 receptor antagonistic activity. It inhibits histamine release from mast cells and reduces allergic responses.
1 tablet (5 mg desloratadine/120 mg pseudoephedrine) orally once daily
10 mg orally once daily for adults and children ≥6 years.
None Documented
None Documented
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).
Terminal elimination half-life 27 hours (range 22-30 hours); clinical context: allows once-daily dosing, steady state reached in 5-7 days
Desloratadine: ~87% excreted as metabolites (41% urine, 43% feces), <2% unchanged. Pseudoephedrine: ~70-90% excreted unchanged in urine.
Renal 40% as metabolites, fecal 40% as metabolites, biliary <5% as unchanged drug
Category C
Category C
Antihistamine/Decongestant Combination
Antihistamine