Comparative Pharmacology
Head-to-head clinical analysis: DEXCHLORPHENIRAMINE MALEATE versus HYDRAMINE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: DEXCHLORPHENIRAMINE MALEATE versus HYDRAMINE.
DEXCHLORPHENIRAMINE MALEATE vs HYDRAMINE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Dexchlorpheniramine maleate is a histamine H1 receptor antagonist that competitively blocks the effects of histamine at peripheral H1 receptors, reducing symptoms of allergic reactions such as vasodilation, increased vascular permeability, and smooth muscle contraction. It also has anticholinergic and sedative properties.
Antagonist of histamine H1 receptors, preventing histamine-mediated responses such as vasodilation, bronchoconstriction, and increased capillary permeability.
2 mg orally every 4-6 hours; maximum 12 mg/day
50-100 mg IV/IM every 4-6 hours, maximum 400 mg per day. Also available as 50 mg oral tablets.
MODERATE Risk
MODERATE Risk
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
moderateDexchlorpheniramine maleate + Haloperidol
"The metabolism of Haloperidol can be decreased when combined with Dexchlorpheniramine maleate."
Clinical Note
moderateTerminal elimination half-life is 20-24 hours in healthy adults, allowing once or twice daily dosing. Prolonged in hepatic impairment or elderly.
Terminal elimination half-life 5.7 hours, range 4.2-7.7 hours; prolonged in hepatic impairment (up to 15 hours in cirrhosis)
Primarily renal (approximately 70-80% as unchanged drug and metabolites, mainly glucuronide conjugates); minor biliary/fecal elimination (20-30%).
Primarily renal (95%) as metabolites; <5% unchanged; 5% fecal
Category C
Category C
Antihistamine
Antihistamine
Diphenhydramine + Tenofovir disoproxil
"The metabolism of Tenofovir disoproxil can be decreased when combined with Diphenhydramine."