Case Presentation: 63-year-old male with history of hypertension (HTN) on Lisinopril, with recent addition of hydrochlorothiazide (HCTZ) for uncontrolled HTN a week prior to presentation. He presented with dark color urine, nausea, constipation reported to have ensued a week after HCTZ was added to his regimen. He denied IV drug, alcohol, acetaminophen or any over [...]