When Cefepime Isn't Available: What Are Your Options?

If you've been prescribed Cefepime and your hospital or pharmacy can't fill it, you're not out of options. While Cefepime is an important antibiotic for treating serious infections, there are several effective alternatives that your doctor can consider.

This article covers what Cefepime does, how it works, and the most commonly used alternatives — so you can have an informed conversation with your healthcare provider. For the latest on the shortage, visit our Cefepime shortage update for 2026.

What Is Cefepime and What Does It Treat?

Cefepime (brand name Maxipime) is a fourth-generation cephalosporin antibiotic. It belongs to the beta-lactam family of antibiotics, which are among the most widely used antimicrobial agents in the world.

Cefepime is FDA-approved to treat:

• Moderate to severe pneumonia, including hospital-acquired pneumonia
• Complicated and uncomplicated urinary tract infections
• Skin and skin structure infections
• Complicated intra-abdominal infections (with Metronidazole)
• Febrile neutropenia — fever in patients with dangerously low white blood cell counts, often due to chemotherapy
• Bacterial meningitis in children

To learn more about its uses and dosing, read our complete guide: What Is Cefepime? Uses, Dosage, and What You Need to Know.

How Does Cefepime Work?

Cefepime kills bacteria by disrupting their cell wall synthesis. It binds to proteins called penicillin-binding proteins (PBPs) inside the bacterial cell wall, preventing the bacteria from building and maintaining their protective outer layer. Without a functioning cell wall, bacteria swell and burst.

What makes Cefepime special compared to older cephalosporins is its ability to resist breakdown by many bacterial enzymes (beta-lactamases) and penetrate the outer membrane of Gram-negative bacteria more effectively. This gives it a broader range of activity, including against Pseudomonas aeruginosa, a notoriously difficult-to-treat bacterium. For a deeper dive, see how Cefepime works.

Alternative 1: Ceftazidime (Fortaz)

Ceftazidime is a third-generation cephalosporin and one of the closest alternatives to Cefepime. Like Cefepime, it has strong activity against Pseudomonas aeruginosa and many other Gram-negative bacteria.

How it compares to Cefepime:

• Effective against many of the same bacteria, particularly Pseudomonas
• Available as an IV or IM injection, similar to Cefepime
• Slightly narrower spectrum — less active against some Gram-positive bacteria compared to Cefepime
• Does not cover some extended-spectrum beta-lactamase (ESBL) producing organisms that Cefepime may cover

Typical dosing: 1-2 g IV every 8 hours for serious infections

Best for: Patients who need anti-Pseudomonal coverage and cannot access Cefepime. Often used for hospital-acquired pneumonia, complicated UTIs, and febrile neutropenia.

Alternative 2: Piperacillin-Tazobactam (Zosyn)

Piperacillin-Tazobactam (commonly called Zosyn) is a combination of an extended-spectrum penicillin with a beta-lactamase inhibitor. It's one of the most widely used broad-spectrum antibiotics in hospitals.

How it compares to Cefepime:

• Broader anaerobic coverage — better for intra-abdominal infections and mixed infections
• Active against Pseudomonas aeruginosa
• Available as an IV infusion
• May be associated with a higher rate of acute kidney injury when combined with Vancomycin compared to Cefepime plus Vancomycin
• Larger fluid volume per dose

Typical dosing: 3.375 g to 4.5 g IV every 6-8 hours

Best for: Hospital-acquired infections, intra-abdominal infections, febrile neutropenia, and situations where anaerobic coverage is needed alongside Gram-negative coverage.

Alternative 3: Meropenem (Merrem)

Meropenem is a carbapenem antibiotic — one of the broadest-spectrum antibiotics available. It's often considered a "last resort" for resistant infections, but may be used when other options are unavailable.

How it compares to Cefepime:

• Broadest spectrum of all alternatives — covers Gram-positive, Gram-negative, and anaerobic bacteria
• Active against many resistant organisms that other beta-lactams cannot cover
• Available as an IV infusion
• Higher risk of promoting antibiotic resistance if overused
• Generally reserved for more serious or resistant infections

Typical dosing: 1-2 g IV every 8 hours

Best for: Patients with resistant infections, failed prior antibiotic therapy, or when both Cefepime and Ceftazidime are unavailable. Also used for bacterial meningitis.

Alternative 4: Ceftazidime-Avibactam (Avycaz)

Ceftazidime-Avibactam is a newer combination that pairs Ceftazidime with a novel beta-lactamase inhibitor called Avibactam. This gives it activity against many resistant organisms.

How it compares to Cefepime:

• Active against many extended-spectrum beta-lactamase (ESBL) and some carbapenem-resistant organisms
• Available as an IV infusion
• Significantly more expensive than Cefepime or Ceftazidime alone
• Typically reserved for resistant infections

Typical dosing: 2.5 g IV every 8 hours

Best for: Patients with infections caused by resistant Gram-negative bacteria, particularly when susceptibility testing shows resistance to standard agents.

Important: Your Doctor Chooses the Right Alternative

The best alternative to Cefepime depends on several factors that only your doctor can evaluate:

• The type and location of your infection
• Which bacteria are causing it (from culture results)
• Your kidney function and other health conditions
• Your allergy history
• What's actually available at your facility

Never switch antibiotics on your own. Always talk to your doctor or pharmacist before making any changes. Antibiotic selection for serious infections requires expert medical judgment.

Final Thoughts

The Cefepime shortage is a real challenge, but there are effective alternatives. Ceftazidime, Piperacillin-Tazobactam, Meropenem, and Ceftazidime-Avibactam each have their own strengths and are used in hospitals every day.

If you're having trouble finding Cefepime, start by checking Medfinder for real-time availability. If it's truly unavailable, work with your healthcare team to find the best alternative for your specific situation.

For more on finding Cefepime, read our guide on how to find Cefepime in stock near you.