This second section of our medication database entry focuses on potential side effects, withdrawal or discontinuation effects, and additional information, while part one covers basic drug characteristics, uses and benefits.
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What are the possible side effects of flecainide?
- If you experience any of the following serious side effects, stop taking flecainide and seek emergency medical attention:
- an allergic reaction (difficulty breathing; closing of your throat; swelling of your lips, tongue, or face; or hives);
- a new or a worsening irregular heartbeat pattern;
- wheezing, coughing, chest pain, or chest discomfort; or
- decreased heart rate.
- Other, less serious side effects may be more likely to occur. Continue to take flecainide and talk to your doctor if you experience
- dizziness or tiredness;
- upset stomach, abdominal pain, or constipation;
- headache or blurred vision; or
- swelling.
- Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems or unusual or that is especially bothersome.
What other drugs will affect flecainide?
- Before taking flecainide, tell your doctor if you are taking any of the following medicines:
- amiodarone (Cordarone),
- cimetidine (Tagamet, Tagamet HB),
- disopyramide (Norpace),
- propranolol (Inderal), or
- verapamil (Verelan, Calan, Isoptin).
- The medicines listed above may increase the effects of flecainide. You may require a lower dose of flecainide if you are taking any of these medicines.
- Also, flecainide may increase the effects of drugs such as propranolol (Inderal) and digoxin (Lanoxin, Lanoxicaps), and side effects could result. Tell your doctor if you are taking these medicines.
- Drugs other than those listed here may also interact with flecainide. Talk to your doctor and pharmacist before taking any prescription or over-the-counter medicines.
Where can I get more information?
- Your pharmacist has more information about flecainide written for health professionals that you may read.
- Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.
Limitations and the Source of Our Online Medication Information Database
Although we have made considerable efforts to ensure that the information provided here is accurate, up-to-date, and complete, MedLibrary.org makes no guarantee to that effect. Drug information contained herein may be time sensitive. This medication information does not endorse drugs, diagnose patients or recommend any specific pharmacotherapy. This is an educational resource only -- intended to supplement but not to replace the expertise, skill, knowledge and judgment of medically qualified healthcare practitioners. The absence of a warning for a given drug or drug combination in no way should be construed to indicate that the drug or drug combination is safe, effective or appropriate for any given patient. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, please check with your doctor, nurse or local pharmacist. MedLibrary.org does not assume any responsibility for any aspect of healthcare administered with the aid of information provided here.
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Version: 3.04. Revision Date: 2/14/03.