NCIt definition : A parenteral antibiotic preparation containing imipenem and cilastatin sodium with
bactericidal activity. Imipenem, a broad spectrum beta-lactam antibiotic, binds to
penicillin-binding proteins (PBP) on the inner membrane of the bacterial cell wall,
thereby interfering with the cross-linkage of peptidoglycan chains critical for bacterial
cell wall strength and rigidity. Cilastatin sodium is added to reduce breakdown of
imipenem by kidney dehydropeptidase. This agent is effective against both gram positive
and negative bacteria and is often used in treating severe infections caused by multiresistant
organisms.;