Comparative Pharmacology
Head-to-head clinical analysis: DEFLAZACORT versus OTOCORT.
Peer-Reviewed Evidence
Head-to-head clinical analysis: DEFLAZACORT versus OTOCORT.
DEFLAZACORT vs OTOCORT
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Deflazacort is a glucocorticoid prodrug that is metabolized to its active form, 21-desacetyldeflazacort. It binds to glucocorticoid receptors, leading to anti-inflammatory and immunosuppressive effects by inhibiting phospholipase A2, reducing prostaglandin and leukotriene synthesis, and modulating cytokine production.
Otocort is a combination product containing hydrocortisone (a corticosteroid), neomycin (an aminoglycoside antibiotic), and polymyxin B (a polymyxin antibiotic). Hydrocortisone suppresses inflammation by inhibiting phospholipase A2, reducing prostaglandin and leukotriene synthesis. Neomycin binds to bacterial 30S ribosomal subunit, inhibiting protein synthesis. Polymyxin B disrupts bacterial cell membrane permeability by binding to lipopolysaccharides.
6-90 mg orally once daily; initial dose typically 6-30 mg/day, maintenance as lowest effective dose; taper gradually upon discontinuation.
1-2 drops into affected ear(s) twice daily; otic route.
None Documented
None Documented
Clinical Note
moderateDeflazacort + Gatifloxacin
"The risk or severity of adverse effects can be increased when Deflazacort is combined with Gatifloxacin."
Clinical Note
moderateDeflazacort + Rosoxacin
"The risk or severity of adverse effects can be increased when Deflazacort is combined with Rosoxacin."
Clinical Note
moderateDeflazacort + Levofloxacin
"The risk or severity of adverse effects can be increased when Deflazacort is combined with Levofloxacin."
Clinical Note
moderateDeflazacort + Trovafloxacin
Terminal half-life of the active metabolite Δ6-deflazacort is 1.1–1.9 hours; parent drug half-life is approximately 1–2 hours. Clinical glucocorticoid effect persists for 12–24 hours due to receptor binding.
Hydrocortisone: plasma half-life 1.5-2 hours, biological half-life 8-12 hours due to intracellular receptor binding. Neomycin: terminal half-life 2-4 hours in patients with normal renal function; may prolong to 12-24 hours in renal impairment. Polymyxin B: terminal half-life 6-8 hours in normal renal function; significantly prolonged in renal failure (up to 2-3 days). Clinical context: Topical/otic application yields negligible systemic concentrations, so half-life is relevant only if significant absorption occurs (e.g., damaged tympanic membrane).
Renal (approximately 70% as metabolites, <5% unchanged); biliary/fecal (approximately 30%)
Otocort is a combination product containing hydrocortisone, neomycin, and polymyxin B. The corticosteroid component undergoes hepatic metabolism with renal excretion of metabolites (<5% unchanged). Neomycin is minimally absorbed (3-6% from intact skin, higher from wounds) and excreted renally as unchanged drug (30-50%) and metabolites. Polymyxin B is not significantly absorbed through intact skin or tympanic membrane; systemic absorption negligible. Renal excretion of polymyxin B is slow (40-60% over 72 hours) via glomerular filtration. Fecal elimination accounts for <5% of absorbed dose for all components.
Category C
Category C
Corticosteroid
Otic Antibiotic/Corticosteroid
"The risk or severity of adverse effects can be increased when Deflazacort is combined with Trovafloxacin."