Comparative Pharmacology
Head-to-head clinical analysis: HYDRAMINE versus OPTIMINE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: HYDRAMINE versus OPTIMINE.
HYDRAMINE vs OPTIMINE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Antagonist of histamine H1 receptors, preventing histamine-mediated responses such as vasodilation, bronchoconstriction, and increased capillary permeability.
OPTIMINE (azathioprine) is a purine analog that inhibits DNA and RNA synthesis by interfering with purine metabolism. It is metabolized to 6-mercaptopurine, which inhibits de novo purine synthesis and suppresses T-lymphocyte proliferation.
50-100 mg IV/IM every 4-6 hours, maximum 400 mg per day. Also available as 50 mg oral tablets.
1 mg orally twice daily; maximum 4 mg/day.
None Documented
None Documented
Terminal elimination half-life 5.7 hours, range 4.2-7.7 hours; prolonged in hepatic impairment (up to 15 hours in cirrhosis)
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 of 12-15 hours in healthy adults, prolonged to 24-30 hours in severe renal impairment (CrCl <30 mL/min).
Primarily renal (95%) as metabolites; <5% unchanged; 5% fecal
Renal: 65-75% as unchanged drug; biliary/fecal: 20-30% as metabolites; minor hepatic metabolism via CYP3A4.
Category C
Category C
Antihistamine
Antihistamine
Diphenhydramine + Sulfisoxazole
"The metabolism of Sulfisoxazole can be decreased when combined with Diphenhydramine."