Comparative Pharmacology
Head-to-head clinical analysis: AUGMENTIN 875 versus PENICILLIN G POTASSIUM.
Peer-Reviewed Evidence
Head-to-head clinical analysis: AUGMENTIN 875 versus PENICILLIN G POTASSIUM.
AUGMENTIN '875' vs PENICILLIN G POTASSIUM
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Amoxicillin inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs). Clavulanate is a beta-lactamase inhibitor that irreversibly binds to and inactivates beta-lactamase enzymes, preventing degradation of amoxicillin.
Bactericidal: inhibits transpeptidases (penicillin-binding proteins) involved in bacterial cell wall synthesis, leading to cell lysis.
One 875 mg amoxicillin/125 mg clavulanate tablet orally every 12 hours.
1-4 million units IV every 4-6 hours; maximum 24 million units/day
None Documented
None Documented
Amoxicillin: 1-1.5 hours (may extend to 7-13 hours in renal impairment). Clavulanate: ~1 hour (may extend to 2.5-4.5 hours in renal impairment).
0.5-1 hour in normal renal function; prolonged to 3-10 hours in anuria/end-stage renal disease.
Amoxicillin: ~50-70% renal as unchanged drug, 10-20% biliary. Clavulanate: ~30-50% renal as unchanged, ~25% fecal.
Renal (60-90% as unchanged drug via tubular secretion and glomerular filtration); biliary (minor, <10%); fecal (minimal, <5%).
Category C
Category A/B
Penicillin Antibiotic
Penicillin Antibiotic