Comparative Pharmacology
Head-to-head clinical analysis: BENADRYL versus CHILDREN S FEXOFENADINE HYDROCHLORIDE ALLERGY.
Peer-Reviewed Evidence
Head-to-head clinical analysis: BENADRYL versus CHILDREN S FEXOFENADINE HYDROCHLORIDE ALLERGY.
BENADRYL vs CHILDREN'S FEXOFENADINE HYDROCHLORIDE ALLERGY
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Antihistamine; inverse agonist at histamine H1 receptors, blocking histamine-induced vasodilation, increased capillary permeability, and bronchoconstriction; also anticholinergic and sedative.
Fexofenadine is a selective peripheral H1-receptor antagonist. It inhibits histamine release from mast cells and basophils, reducing allergic symptoms.
25-50 mg orally every 4-6 hours as needed; maximum 300 mg per day. Alternatively, 10-50 mg intramuscularly or intravenously once, maximum 100 mg per dose (IV route preferred).
Fexofenadine hydrochloride 60 mg orally twice daily or 180 mg orally once daily.
None Documented
None Documented
Terminal elimination half-life 4-8 hours; prolonged in hepatic impairment (up to 20 hours).
14.4 hours (range 11-16 hours) in healthy adults; prolonged in renal impairment.
Renal (90% as metabolites, <5% unchanged); minimal biliary/fecal.
Primarily fecal (80%) and renal (11%) as unchanged drug.
Category C
Category A/B
Antihistamine
Antihistamine