Comparative Pharmacology
Head-to-head clinical analysis: OXACILLIN SODIUM versus POLYCILLIN.
Peer-Reviewed Evidence
Head-to-head clinical analysis: OXACILLIN SODIUM versus POLYCILLIN.
OXACILLIN SODIUM vs POLYCILLIN
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Oxacillin is a penicillinase-resistant beta-lactam antibiotic that inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs), thereby blocking the transpeptidation step in peptidoglycan cross-linking. It is resistant to staphylococcal beta-lactamase.
Polycillin (ampicillin) is a beta-lactam antibiotic that inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs), disrupting peptidoglycan cross-linking, leading to cell lysis.
1-2 grams IV every 4-6 hours.
250-500 mg orally every 6 hours or 500 mg intravenously every 4-6 hours for moderate to severe infections.
None Documented
None Documented
0.3-0.8 hours in adults with normal renal function; prolonged to 1-2 hours in neonates and 2-5 hours in patients with severe renal impairment (CrCl <10 mL/min)
Terminal elimination half-life is 0.5-1 hour in adults with normal renal function; prolonged to 7-10 hours in anuria.
Renal (70-80% unchanged by tubular secretion and glomerular filtration); biliary (minor, approximately 10%)
Renal excretion of unchanged drug accounts for 60-80% via glomerular filtration and tubular secretion; 20-40% is hepatically metabolized and eliminated in bile/feces.
Category A/B
Category C
Penicillin Antibiotic
Penicillin Antibiotic