Comparative Pharmacology
Head-to-head clinical analysis: CHILDREN S FEXOFENADINE HYDROCHLORIDE HIVES versus HYDRAMINE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: CHILDREN S FEXOFENADINE HYDROCHLORIDE HIVES versus HYDRAMINE.
CHILDREN'S FEXOFENADINE HYDROCHLORIDE HIVES vs HYDRAMINE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Fexofenadine is a peripheral H1-receptor antagonist that selectively inhibits histamine-mediated effects on H1 receptors, reducing allergic symptoms. It does not penetrate the blood-brain barrier significantly, minimizing sedation.
Antagonist of histamine H1 receptors, preventing histamine-mediated responses such as vasodilation, bronchoconstriction, and increased capillary permeability.
Adults and children 12 years and older: 180 mg orally once daily or 60 mg orally twice daily.
50-100 mg IV/IM every 4-6 hours, maximum 400 mg per day. Also available as 50 mg oral tablets.
None Documented
None Documented
Terminal elimination half-life is approximately 14.4 hours (range 11–15 hours) in healthy adults. This supports once-daily dosing. Half-life may be prolonged in patients with renal impairment (up to 19 hours).
Clinical Note
moderateDiphenhydramine + Deferasirox
"The serum concentration of Deferasirox can be increased when it is combined with Diphenhydramine."
Clinical Note
moderateDiphenhydramine + Fluticasone propionate
"The risk or severity of adverse effects can be increased when Diphenhydramine is combined with Fluticasone propionate."
Clinical Note
moderateDiphenhydramine + Tenofovir disoproxil
"The metabolism of Tenofovir disoproxil can be decreased when combined with Diphenhydramine."
Clinical Note
moderateTerminal elimination half-life 5.7 hours, range 4.2-7.7 hours; prolonged in hepatic impairment (up to 15 hours in cirrhosis)
Fexofenadine is primarily excreted unchanged in feces (approximately 80%) via biliary elimination, with minimal renal excretion (approximately 11%). It is not metabolized by the liver.
Primarily renal (95%) as metabolites; <5% unchanged; 5% fecal
Category A/B
Category C
Antihistamine
Antihistamine
Diphenhydramine + Sulfisoxazole
"The metabolism of Sulfisoxazole can be decreased when combined with Diphenhydramine."