What is the recommended intramuscular (IM) dosing of Cefoxitin for a Klebsiella urinary tract infection (UTI)?

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Last updated: July 1, 2025View editorial policy

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From the Research

For a Klebsiella urinary tract infection (UTI), the recommended intramuscular (IM) dosing of Cefoxitin is 1-2 grams every 6-8 hours, as supported by the most recent and relevant study 1. The typical treatment duration is 7-10 days for uncomplicated UTIs, though this may be extended for complicated infections. Before administration, confirm patient allergies to cephalosporins or penicillins due to potential cross-reactivity. The injection should be given deep into a large muscle mass like the gluteus maximus or lateral thigh. Cefoxitin works by inhibiting bacterial cell wall synthesis and is effective against many gram-negative organisms including Klebsiella species. Some key points to consider when treating UTIs with Cefoxitin include:

  • Monitoring for signs of cross-reactivity in patients with known allergies to cephalosporins or penicillins
  • Ensuring adequate hydration throughout the treatment course
  • Completing the full treatment course even if symptoms resolve earlier to prevent recurrence and antimicrobial resistance
  • Considering alternative administration routes, such as intravenous, for serious infections or oral alternatives for less severe cases once clinical improvement occurs, as noted in studies like 1 and 2. While older studies like 3 and 4 provide some insight into the efficacy of Cefoxitin and other cephalosporins in treating UTIs, the most recent and relevant study 1 supports the use of Cefoxitin as an effective treatment option for Klebsiella UTIs.

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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