Why is imipenem, which has the broadest coverage of all the β-lactam drugs, always given with cilastatin?

Why is imipenem, which has the broadest coverage of all the β-lactam drugs, always given with cilastatin?



Answer: Cilastatin is a dehydropeptidase inhibitor that inhibits metabolism of imipenem in the kidneys. This prevents nephrotoxicity and increases the urine concentration of intact imipenem, allowing for therapy of urinary tract infections.



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