Chronic heart failure is one of the most common reasons for hospital admissions in the United States. A patient is diagnosed with heart failure when the heart is unable to do its physiological work of pumping the blood to the peripheral organs. At this time, the excess volume of fluid can accumulate easily, leading to signs of fluid overload. Loop diuretics has been at the forefront to alleviate these symptoms. It has its own side effects, but a lesser known and monitored is metabolic alkalosis. Herein, we reviewed a case where a patient developed metabolic alkalosis due to loop diuretics.