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Ceftazidime-avibactam + Fosfomycin

National University of Singapore · FDA-approved active Small molecule

Ceftazidime-avibactam inhibits bacterial cell wall synthesis while avibactam protects against beta-lactamase degradation, and fosfomycin disrupts peptidoglycan cross-linking through a different pathway to provide synergistic broad-spectrum coverage.

Ceftazidime-avibactam inhibits bacterial cell wall synthesis while avibactam protects against beta-lactamase degradation, and fosfomycin disrupts peptidoglycan cross-linking through a different pathway to provide synergistic broad-spectrum coverage. Used for Complicated urinary tract infections (cUTI), Hospital-acquired bacterial pneumonia (HABP) and ventilator-associated bacterial pneumonia (VABP), Complicated intra-abdominal infections (cIAI).

At a glance

Generic nameCeftazidime-avibactam + Fosfomycin
SponsorNational University of Singapore
Drug classBeta-lactam/beta-lactamase inhibitor combination + phosphonic acid antibiotic
TargetPenicillin-binding proteins (PBPs), beta-lactamases, MurA enzyme
ModalitySmall molecule
Therapeutic areaInfectious Disease
PhaseFDA-approved

Mechanism of action

Ceftazidime is a third-generation cephalosporin that binds penicillin-binding proteins and inhibits cell wall synthesis. Avibactam is a beta-lactamase inhibitor that protects ceftazidime from enzymatic degradation by resistant organisms. Fosfomycin is a phosphonic acid antibiotic that inhibits MurA enzyme, blocking early-stage peptidoglycan synthesis. The combination provides enhanced activity against multidrug-resistant gram-negative bacteria including carbapenem-resistant Enterobacteriaceae and Pseudomonas aeruginosa.

Approved indications

Common side effects

Key clinical trials

Primary sources

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SourceUsed for
ClinicalTrials.govTrial enrolment, design, endpoints, results

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