A 70-year-old man was presented with a complaint of acute renal failure, persistent nausea and weakness. He was initially seen 1 week ago for nausea and abdominal pain and was started on treatment for ulcer disease associated with Helicobacter pylori . His current medications include low-dose aspirin, nifedipine, omeprazole, amoxicillin, fluoxetine, and clarithromycin. History: Coronary artery disease, hypertension and depression His blood pressure at this time is 90/60 mm Hg, and his heart rate is 100 beats/min.
Laboratory test results: Blood urea nitrogen: 35 mg/dL; Creatinine: 3.8 mg/dL; and Potassium: 4.8 mEq/L. Is it a drug interaction or allergic interstitial nephritis? * This question is from Docplexus Editorial Team for educative purpose only