Omeprazole, a Proton pump inhibitor, is widely prescribed in patients with chronic gastroesophageal reflux. Patients continue to use omeprazole for long period of time even without the supervision of the doctor. The authors report a 50-year-old male patient with a 5-year history of omeprazole use, who complained of chest discomfort. ECG on admission showed atrial fibrillation. Laboratory findings showed hypomagnesaemia, hypocalcaemia, and hypokalemia. The case report emphasizes the importance of patient education regarding the use and adverse drug reactions of the prescribed medications.
Key words: Omeprazole; Atrial Fibrillation; Hypomagnesaemia; Proton Pump Inhibitors
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