Comparative Pharmacology
Head-to-head clinical analysis: POLYCILLIN versus POLYMOX.
Peer-Reviewed Evidence
Head-to-head clinical analysis: POLYCILLIN versus POLYMOX.
POLYCILLIN vs POLYMOX
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.
Amoxicillin is a bactericidal antibiotic that inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs) and inhibiting transpeptidase activity, leading to cell lysis.
250-500 mg orally every 6 hours or 500 mg intravenously every 4-6 hours for moderate to severe infections.
250-500 mg orally every 8 hours or 500-875 mg orally every 12 hours; maximum 4 g/day.
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.
Terminal elimination half-life = 1-1.5 hours in adults; prolonged in renal impairment (up to 12-20 hours in anuria)
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 (70-80% unchanged via tubular secretion and glomerular filtration); biliary/fecal (small amount, <5%)
Category C
Category C
Penicillin Antibiotic
Penicillin Antibiotic