Heart Disease: Heart Disease Medicine: Antiarrhythmics

Antiarrhythmia drugs are used to treat abnormal heart rhythms resulting from irregular electrical activity of the heart. There are many different types of antiarrhythmic drugs. Examples include:

• Tambocor (flecainide)
• Procanbid (procainamide)
• Cordarone (amiodarone)
• Betapace (sotalol)

In addition, there are other types of heart medications that can be used to treat arrhythmias, including:

• Beta-blockers such as metoprolol or Toprol XL, which reduce the heart's workload and heart rate.
• Calcium channel blockers such as Calan, which reduce the workload of the heart by blocking the uptake of calcium into the cells (this helps the heart contract harder).

There are also a variety of medications used by the doctor in an emergency situation to control or convert an abnormal heart rhythm.

Why Do I Need to Take an Antiarrhythmic?

Your doctor had determined that you have an abnormal heart rhythm that would be best treated with medications alone or in addition to a procedure such as ICD placement.

Because these medications only control arrhythmias, not cure them, you may have to take them for life.

Can I Take Other Medications While Taking Antiarrhythmics?

If you are taking an antiarrhythmic, talk to your doctor before taking any other drugs (prescription or over-the-counter), herbal remedies, or supplements.

Are There Side Effects Associated With Antiarrhythmics?

Yes. Notify your doctor immediately if you experience any of the following side effects:

• Worsening arrhythmias
• Allergic reaction
• Chest pain
• Fainting
• Swelling of the feet or legs
• Blurred vision
• Shortness of breath
• Abnormally fast heartbeat
• Abnormally slow heartbeat
• Dizziness or lightheadedness
• Bitter or metallic taste or change in taste
• Loss of appetite
• Cough
• Increased sensitivity to sunlight
• Diarrhea or constipation

When first taking antiarrhythmics, avoid operating heavy machinery (for example, driving) until you know how the medication will affect you.

Reviewed by the doctors at The Cleveland Clinic Heart Center.