Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 9/24/2025

Treatment of Urinary Tract Infections with Augmentin

  • For uncomplicated cystitis in otherwise healthy women, the Infectious Diseases Society of America recommends a 5-day course of nitrofurantoin or a single 3-gram dose of fosfomycin as first-line agents 1
  • Augmentin can be used as a second-line option when patients have contraindications to first-line agents, penicillin allergy is absent, and local resistance patterns favor beta-lactam use, as suggested by the European Society of Clinical Microbiology and Infectious Diseases 2
  • For complicated UTIs with systemic symptoms, the European Association of Urology recommends considering alternative regimens such as amoxicillin plus an aminoglycoside, second-generation cephalosporin plus an aminoglycoside, or intravenous third-generation cephalosporin 3

Dosing Regimen and Antimicrobial Stewardship

  • The European Urology guidelines suggest extending treatment to 7-14 days for complicated UTIs or when prostatitis cannot be excluded in men 3
  • The Infectious Diseases Society of America recommends reserving beta-lactam/beta-lactamase inhibitor combinations for organisms that actually produce beta-lactamase to minimize collateral damage and resistance development 1