Comparative Pharmacology
Head-to-head clinical analysis: POLYCILLIN versus VEETIDS 500.
Peer-Reviewed Evidence
Head-to-head clinical analysis: POLYCILLIN versus VEETIDS 500.
POLYCILLIN vs VEETIDS '500'
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
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.
VEETIDS '500' (cefuroxime axetil) is a second-generation cephalosporin antibiotic that inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs), thereby blocking transpeptidation and leading to cell lysis. It has activity against both gram-positive and gram-negative bacteria.
250-500 mg orally every 6 hours or 500 mg intravenously every 4-6 hours for moderate to severe infections.
1 tablet (500 mg) orally twice daily for 7 days.
None Documented
None Documented
Terminal elimination half-life is 0.5-1 hour in adults with normal renal function; prolonged to 7-10 hours in anuria.
4-6 hours (prolonged in renal impairment; requires dose adjustment if CrCl <30 mL/min)
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.
Renal: 60-80% unchanged; biliary/fecal: 15-25% as metabolites
Category C
Category C
Penicillin Antibiotic
Penicillin Antibiotic