Comparative Pharmacology
Head-to-head clinical analysis: AZELASTINE HYDROCHLORIDE CHILDREN S ALLERGY versus DESLORATADINE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: AZELASTINE HYDROCHLORIDE CHILDREN S ALLERGY versus DESLORATADINE.
AZELASTINE HYDROCHLORIDE CHILDREN'S ALLERGY vs DESLORATADINE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Azelastine hydrochloride is a phthalazinone derivative that acts as a selective histamine H1-receptor antagonist. It inhibits the release of histamine and other mediators from mast cells, reduces chemotaxis, and decreases eosinophil activation. It also suppresses leukotriene and cytokine production.
Desloratadine is a long-acting tricyclic histamine antagonist selective for the H1 receptor, inhibiting histamine release from mast cells and basophils. It reduces allergic inflammation by decreasing cytokine and chemokine release.
Azelastine hydrochloride nasal spray: 1 spray (137 mcg) per nostril twice daily; maximum 2 sprays per nostril twice daily.
5 mg orally once daily.
None Documented
None Documented
Clinical Note
moderateDesloratadine + Venlafaxine
"The risk or severity of adverse effects can be increased when Desloratadine is combined with Venlafaxine."
Clinical Note
moderateDesloratadine + Nefazodone
"The risk or severity of adverse effects can be increased when Desloratadine is combined with Nefazodone."
Clinical Note
moderateDesloratadine + Stiripentol
"The risk or severity of adverse effects can be increased when Desloratadine is combined with Stiripentol."
Clinical Note
moderateTerminal elimination half-life is 22–25 hours in adults; steady state achieved in 3–5 days. In children (6–11 years), half-life is similar (mean 22 hours).
Terminal half-life 27 hours (range 21–30 h) in healthy adults; supports once-daily dosing.
Primarily renal (approximately 75%), with about 50% as unchanged drug and 25% as metabolites via CYP3A4 and CYP2D6. Fecal excretion accounts for ~20%.
Primarily renal (87% as metabolites, ~41% unchanged) and fecal (~9%). Metabolized to active 3-hydroxydesloratadine.
Category C
Category A/B
Antihistamine
Antihistamine
Desloratadine + Fesoterodine
"The serum concentration of the active metabolites of Fesoterodine can be increased when Fesoterodine is used in combination with Desloratadine."