Comparative Pharmacology
Head-to-head clinical analysis: NEOMYCIN SULFATE POLYMYXIN B SULFATE HYDROCORTISONE versus U GENCIN.
Peer-Reviewed Evidence
Head-to-head clinical analysis: NEOMYCIN SULFATE POLYMYXIN B SULFATE HYDROCORTISONE versus U GENCIN.
NEOMYCIN SULFATE-POLYMYXIN B SULFATE-HYDROCORTISONE vs U-GENCIN
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Neomycin sulfate is an aminoglycoside antibiotic that binds to the 30S ribosomal subunit, causing misreading of mRNA and inhibiting protein synthesis in susceptible bacteria. Polymyxin B sulfate is a polypeptide antibiotic that disrupts bacterial cell membrane integrity by interacting with phospholipids. Hydrocortisone is a corticosteroid that suppresses inflammation by inhibiting phospholipase A2, reducing prostaglandin and leukotriene synthesis, and modulating immune cell activity.
Aminoglycoside antibiotic that binds to the 30S ribosomal subunit, causing misreading of mRNA and inhibiting bacterial protein synthesis.
Otic: Instill 3-5 drops into the affected ear(s) 3-4 times daily; for acute otitis externa, a wick may be used initially.
1-2 mg/kg IV every 8 hours for 7-10 days, targeting peak serum concentration of 6-10 mcg/mL and trough <2 mcg/mL.
None Documented
None Documented
Neomycin: 2-3 hours (renal impairment: up to 12-24 hours). Polymyxin B: 4.5-6 hours (prolonged in renal failure). Hydrocortisone: 1.5-2 hours.
Terminal elimination half-life is 2-3 hours in patients with normal renal function; may prolong to 20-40 hours in end-stage renal disease
Neomycin is excreted primarily unchanged in feces (97%) after oral administration; absorbed fraction is renally excreted (30-50%). Polymyxin B is renally excreted (60%) with some biliary excretion. Hydrocortisone is metabolized hepatically and excreted renally as conjugates.
Primarily renal (glomerular filtration) with 40-70% excreted unchanged in urine within 24 hours; minor biliary/fecal (<5%)
Category A/B
Category C
Aminoglycoside Antibiotic
Aminoglycoside Antibiotic