Comparative Pharmacology
Head-to-head clinical analysis: CLARITIN D versus DISOMER.
Peer-Reviewed Evidence
Head-to-head clinical analysis: CLARITIN D versus DISOMER.
CLARITIN-D vs DISOMER
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Loratadine is a long-acting tricyclic antihistamine with selective peripheral H1 receptor antagonism. Pseudoephedrine is a sympathomimetic amine that acts as a decongestant by stimulating alpha-adrenergic receptors in the respiratory tract mucosa, causing vasoconstriction.
Selective dopamine D2 receptor antagonist; also blocks alpha-1 adrenergic, histamine H1, and muscarinic M1 receptors.
One tablet (5 mg loratadine/120 mg pseudoephedrine sulfate) orally every 12 hours; do not exceed 2 tablets in 24 hours.
Adults: 1 mg orally once daily.
None Documented
None Documented
Loratadine: 8-14 h (mean 11 h); desloratadine: 17-24 h (mean 21 h). Pseudoephedrine: 4-8 h (mean 6 h), prolonged in alkaline urine.
12–15 hours in adults with normal renal function; prolonged to 30–40 hours in severe renal impairment (CrCl <30 mL/min).
Loratadine: 40% renal (metabolites), ~40% fecal; desloratadine: 33% renal, 66% fecal. Pseudoephedrine: 70-90% renal unchanged, 1-2% biliary.
Renal: 80% as unchanged drug; biliary/fecal: 15% as metabolites; <5% unchanged in feces.
Category C
Category C
Antihistamine/Decongestant Combination
Antihistamine