Sotalol is a medication primarily used to treat certain types of irregular heartbeats, known as arrhythmias. It works by blocking specific receptors in the heart, which helps to stabilize the heart's rhythm and improve its overall function. Sotalol is often prescribed for patients with conditions like atrial fibrillation or ventricular tachycardia. This drug is available in oral and intravenous forms and is typically taken twice a day. Patients using sotalol may need regular monitoring of their heart rate and kidney function, as it can have side effects such as bradycardia (slow heart rate) and fatigue.