Flecainide is a medication primarily used to treat certain types of irregular heartbeats, known as arrhythmias. It works by blocking specific electrical signals in the heart, helping to restore a normal rhythm. Flecainide is often prescribed for patients with conditions like atrial fibrillation or ventricular tachycardia. This drug is typically taken in pill form and is usually prescribed when other treatments have not been effective. While it can be beneficial, flecainide may also have side effects, including dizziness or blurred vision. Regular monitoring by a healthcare provider is essential to ensure its safe use.