Case Presentation: A 73-year-old male with a past medical history of hypertension and benign prostatic hyperplasia presented to the emergency department (ED) with acute onset generalized weakness, nausea, emesis, diarrhea, fever, and dyspnea approximately 2.5 hours after taking a combination pill of losartan-hydrochlorothiazide (HCTZ). The patient reported that he had been prescribed losartan-HCTZ 50-12.5 mg [...]