Comparative Pharmacology
Head-to-head clinical analysis: AUGMENTIN 125 versus AUGMENTIN XR.
Peer-Reviewed Evidence
Head-to-head clinical analysis: AUGMENTIN 125 versus AUGMENTIN XR.
AUGMENTIN '125' vs AUGMENTIN XR
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), inhibiting transpeptidation and autolysin activation. Clavulanate is a beta-lactamase inhibitor that irreversibly binds to and inactivates beta-lactamases, preventing hydrolysis of amoxicillin.
Amoxicillin is a beta-lactam antibacterial that 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, protecting amoxicillin from degradation.
One AUGMENTIN '125' tablet (amoxicillin 125 mg, clavulanate 31.25 mg) orally every 8 hours for mild to moderate infections.
Adults and adolescents ≥16 years: 2 tablets (amoxicillin 1000 mg/clavulanate 62.5 mg per tablet) orally every 12 hours for 10 days.
None Documented
None Documented
Amoxicillin: 1.0-1.3 hours (prolonged in renal impairment; up to 7-20 hours in anuria). Clavulanate: 0.9-1.2 hours (increased in renal impairment).
Amoxicillin: ~1.0-1.3 hours; clavulanate: ~0.9-1.2 hours; prolonged in renal impairment (creatinine clearance <30 mL/min: amoxicillin half-life up to 7-14 hours).
Amoxicillin: ~50-70% excreted unchanged in urine via glomerular filtration and tubular secretion; clavulanate: ~30-50% excreted unchanged in urine. Small amounts eliminated in bile and feces.
Amoxicillin: ~50-70% excreted unchanged in urine via glomerular filtration and tubular secretion; clavulanate: ~25-40% excreted unchanged in urine; both undergo minor biliary/fecal elimination (<10%).
Category C
Category C
Penicillin Antibiotic
Penicillin Antibiotic