Comparative Pharmacology
Head-to-head clinical analysis: CLARINEX D 12 HOUR versus CYPROHEPTADINE HYDROCHLORIDE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: CLARINEX D 12 HOUR versus CYPROHEPTADINE HYDROCHLORIDE.
CLARINEX-D 12 HOUR vs CYPROHEPTADINE HYDROCHLORIDE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Desloratadine is a long-acting tricyclic histamine antagonist selective for H1-receptor with additional anti-inflammatory properties. Pseudoephedrine is a sympathomimetic amine that acts as a vasoconstrictor via alpha-adrenergic receptors.
Cyproheptadine is a potent antihistamine (H1 receptor antagonist) and antiserotonergic agent (5-HT2 receptor antagonist). It also exhibits weak anticholinergic and sedative properties. It blocks histamine-mediated vasodilation, increased capillary permeability, and pruritus, as well as serotonin-mediated effects on appetite and mood.
1 tablet (5 mg desloratadine / 120 mg pseudoephedrine) orally every 12 hours.
4 mg orally three times daily; range 4-20 mg/day, not to exceed 0.5 mg/kg/day
None Documented
None Documented
Desloratadine: 27 hours (terminal), allows once-daily dosing; pseudoephedrine: 4-6 hours (prolonged in alkaline urine).
Terminal half-life approximately 8–16 hours in adults; may be prolonged in elderly or hepatic impairment.
Desloratadine: 40.2% renal (unchanged and metabolites), 41.7% fecal; pseudoephedrine: 70-90% renal (unchanged).
Primarily renal (appreciable unchanged drug and metabolites); biliary/fecal elimination minor (<5%).
Category C
Category A/B
Antihistamine/Decongestant Combination
Antihistamine