Let's take a minute to talk about your medication. This is flecainide. This medicine can help prevent certain irregular heartbeats. It can also help prevent 'sustained v. tach', which is a type of fast heartbeat that can be life-threatening. You should take this medicine exactly as directed by your doctor. It is important to not miss doses. But if you do, just take your next dose at the usual time. Do not take 2 doses at the same time. Common side effects include having nausea or a headache. These effects are normal if they are mild, and should go away. If these or other side effects become reasons you want to stop taking this medicine, please talk to your doctor or pharmacist. Some patients feel a little dizzy or tired. Others notice changes to their eyesight, like blurry vision or seeing spots. Call your doctor if these happen to you. Also, you should wait until you know how this medicine affects you, before doing things that require you to be alert, like driving. As with any medicine, more serious effects could occur. Flecainide could make your heart rhythm worse, or it could cause a new rhythm problem. These effects appear more likely to happen when treating 'v. tach'. So, most patients who have v. tach will start taking this medicine in the hospital. While there, your doctor will find the right dose that works best for you. You should always get medical help right away if your heart problems seem worse instead of better. To avoid drug interactions, you should check with your doctor or pharmacist before taking other medicines. For best results with flecainide, plan ahead for refills, and follow your doctor's advice for steps you can take to manage your condition.