Varenicline-Associated Acute Renal Failure:

2008 
Objective:To report an association between acute renal failure and varenicline.Case Summary:A 53-year-old white male with preexisting moderate renal insufficiency was admitted to the hospital for acute renal failure following a change in serum creatinine from 4 mg/dL at baseline to 10.6 mg/dL upon admission. One week prior to admission, the patient started taking varenicline (dose undetermined) for smoking cessation and had been stable on all other medications for 2 months prior to admission. All hospital workup tests were negative for prerenal azotemia, postrenal obstruction, and intrinsic renal disease. Varenicline was discontinued on admission. With no other changes in therapy, the serum creatinine level decreased each day of the patient's 5-day hospitalization to 8.6 mg/dL upon discharge, and it was 6.4 mg/dL at a follow-up appointment 2 weeks after discharge.Discussion:Varenicline is a novel medication that is effective for smoking cessation. Adverse effects are generally mild and self-limiting, with...
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