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Heart Disease and 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:

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

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Beta-blockers such as metoprolol or Toprol XL, which reduce the heart's workload and heart rate.
Calcium channel blockers such as Calan, which also reduces the heart rate.

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

Why Do I Need to Take an Antiarrhythmia Drug?

Your doctor has determined that you have an abnormal heart rhythm that would be best treated with drugs alone or in addition to a procedure, such as putting in an implantable cardioverter defibrillator (ICD).

Because these drugs only control abnormal heart rhythms, not cure them, you may have to take them for life.

Can I Take Other Drugs 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, antiarrhythmics do have side effects. 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. Ask your doctor for advice about what to avoid doing and when you can resume.

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