Description_x000D_ General description_x000D_ Cilastatin sodium salt is off-white to yellowish-white, hygroscopic, amorphous compound. It is derivatized from heptenoic acid. Its molecular mass is 380.43 g._x000D_ Packaging_x000D_ 100 mg in glass insert_x000D_ Biochem/physiol Actions_x000D_ Inhibitor of the renal enzyme dehydropeptidase I and some bacterial zinc-containing β-lactamases. By these action, cilastatin suppresses both host and target metabolism of the broad-spectrum antibiotic imipenem, improving its efficacy.