Flecainide Oral
In Depth
- Uses and How to Use
- Dosage and Storage
- Precautions and Side Effects
- Drug Interactions
- Drug Images
Pronounced: (fleck-UH-nide)
Flecainide Oral Warning
Though this medication often gives great benefits to people with irregular heartbeat, it may infrequently cause a serious new irregular heartbeat. Therefore, when starting treatment with this drug, your doctor may recommend that you stay in the hospital for proper monitoring. Flecainide should not be used to treat a certain type of irregular heartbeat (persistent atrial fibrillation/flutter). Talk with your doctor about the benefits and risks of taking this medication for your condition.
Flecainide Oral Side Effects
See also Warning section.
Dizziness, vision problems (such as blurred vision, problems focusing, seeing spots), shortness of breath, headache, nausea, shaking, tiredness, or weakness may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Tell your doctor immediately if any of these unlikely but serious side effects occur:
- new or worsening symptoms of heart failure (such as ankle/leg swelling, increased tiredness, increased shortness of breath when lying down)
Seek immediate medical attention if any of these rare but serious side effects occur:
- faster/more irregular heartbeat
- severe dizziness
- fainting
A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including:
- rash
- itching/swelling (especially of the face/tongue/throat)
- severe dizziness
- trouble breathing
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
Call your doctor for medical advice about side effects. In the US, you may report side effects to the Food and Drug Administration (FDA) at 1-800-FDA-1088.
In Canada, you may report side effects to Health Canada at 1-866-234-2345.
Flecainide Oral Medical Alert
Your condition can cause complications in a medical emergency. For information about enrolling in MedicAlert, call 1-800-854-1166 (USA) or 1-800-668-1507 (Canada).
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