Comparative Pharmacology
Head-to-head clinical analysis: AMPICILLIN SODIUM versus AUGMENTIN 875.
Peer-Reviewed Evidence
Head-to-head clinical analysis: AMPICILLIN SODIUM versus AUGMENTIN 875.
AMPICILLIN SODIUM vs AUGMENTIN '875'
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Ampicillin is a beta-lactam antibiotic that inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs), leading to cell lysis and death.
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.
1-2 g IV/IM every 4-6 hours for serious infections; maximum 12 g/day.
One 875 mg amoxicillin/125 mg clavulanate tablet orally every 12 hours.
None Documented
None Documented
Terminal elimination half-life ~1 hour in healthy adults; prolonged to 2–5 hours in renal impairment (CrCl <10 mL/min) and up to 7–20 hours in anuria; neonatal half-life 2–4 hours.
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).
Approximately 90% renal excretion via tubular secretion and glomerular filtration; small biliary excretion (<10%); fecal elimination negligible.
Amoxicillin: ~50-70% renal as unchanged drug, 10-20% biliary. Clavulanate: ~30-50% renal as unchanged, ~25% fecal.
Category A/B
Category C
Penicillin Antibiotic
Penicillin Antibiotic