Propafenone is a medication primarily used to treat certain types of irregular heartbeats, known as arrhythmias. It works by stabilizing the electrical activity in the heart, helping to restore a normal rhythm. This drug is often prescribed for conditions like atrial fibrillation and ventricular tachycardia. Propafenone is available in oral form and is usually taken two to three times a day. Patients may experience side effects, including dizziness, fatigue, or gastrointestinal issues. It is important for individuals taking Propafenone to have regular check-ups with their healthcare provider to monitor heart function and adjust dosages as needed.