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IMI/REL FDC

Merck Sharp & Dohme LLC · Phase 3 active Small molecule

IMI/REL is a fixed-dose combination of imipenem (a carbapenem antibiotic) and relebactam (a beta-lactamase inhibitor) that works together to overcome bacterial resistance mechanisms.

IMI/REL is a fixed-dose combination of imipenem (a carbapenem antibiotic) and relebactam (a beta-lactamase inhibitor) that works together to overcome bacterial resistance mechanisms. Used for Complicated urinary tract infections (cUTI) caused by susceptible gram-negative bacteria, Hospital-acquired bacterial pneumonia (HABP) and ventilator-associated bacterial pneumonia (VABP) caused by susceptible gram-negative bacteria.

At a glance

Generic nameIMI/REL FDC
Also known asMK-7655A
SponsorMerck Sharp & Dohme LLC
Drug classCarbapenem/beta-lactamase inhibitor combination
TargetBacterial cell wall (penicillin-binding proteins); serine beta-lactamases
ModalitySmall molecule
Therapeutic areaInfectious Disease
PhasePhase 3

Mechanism of action

Imipenem is a broad-spectrum beta-lactam antibiotic that inhibits bacterial cell wall synthesis. Relebactam is a non-beta-lactam beta-lactamase inhibitor that protects imipenem from degradation by serine beta-lactamases, including extended-spectrum beta-lactamases (ESBLs) and carbapenem-hydrolyzing class A beta-lactamases. This combination restores imipenem's activity against resistant gram-negative bacteria.

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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