Comparative Pharmacology
Head-to-head clinical analysis: GENTACIDIN versus NEOMYCIN AND POLYMYXIN B SULFATES AND HYDROCORTISONE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: GENTACIDIN versus NEOMYCIN AND POLYMYXIN B SULFATES AND HYDROCORTISONE.
GENTACIDIN vs NEOMYCIN AND POLYMYXIN B SULFATES AND HYDROCORTISONE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Aminoglycoside antibiotic that binds to the 30S ribosomal subunit, causing misreading of mRNA and inhibiting protein synthesis.
Neomycin is an aminoglycoside antibiotic that binds to the 30S ribosomal subunit, inhibiting bacterial protein synthesis. Polymyxin B is a cationic detergent 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.
5-7 mg/kg IV every 24 hours.
Instill 3 to 4 drops into the affected ear(s) 3 to 4 times daily. For otic suspension in adults.
None Documented
None Documented
2-3 hours in adults with normal renal function; extended to 24-48 hours in anuria or severe renal impairment, requiring dose adjustment.
Neomycin: 2-3 hours (in adults with normal renal function); may accumulate in renal impairment. Polymyxin B: 6-8 hours (prolonged in renal impairment: up to 36 hours). Hydrocortisone: 1.2-1.5 hours (terminal).
Renal: 95-98% unchanged via glomerular filtration; biliary/fecal: <2%.
Neomycin: >90% unchanged in feces after oral administration; negligible renal excretion. Polymyxin B: 60% renal excretion of unchanged drug; remainder nonrenal. Hydrocortisone: primarily hepatic metabolism, <5% renal excretion unchanged.
Category C
Category A/B
Aminoglycoside Antibiotic
Aminoglycoside Antibiotic