How does flecainide work?
Flecainide blocks sodium channels in the heart muscle, which slows down the electrical impulses that cause abnormal heart rhythms. This helps to prevent or correct irregular heartbeats.
What is flecainide used to treat?
Flecainide is used to manage and prevent certain types of arrhythmias, including:
- Atrial fibrillation
- Atrial flutter
- Supraventricular tachycardia (SVT)
- Ventricular arrhythmias (in some cases)
Who can take flecainide?
Flecainide may be prescribed for adults with specific heart rhythm problems, especially when other treatments haven’t worked or aren’t suitable.
Who might not be able to take flecainide?
Flecainide may not be suitable if you:
- Have certain types of structural heart disease
- Have had a recent heart attack
- Have heart failure
- Have liver or kidney disease
- Are allergic to flecainide or any ingredients in the medicine
Can I take flecainide if I’m pregnant or breastfeeding?
Flecainide is sometimes used during pregnancy if the benefits outweigh the risks. It may pass into breast milk, so talk to your doctor if you are pregnant, planning to become pregnant, or breastfeeding.
What if I miss a dose?
If you forget a dose, take it as soon as you remember unless it’s almost time for the next one. Do not take two doses at once. Always follow your doctor’s instructions.
How effective is flecainide?
Flecainide is effective at restoring and maintaining a normal heart rhythm in many patients. However, regular monitoring is needed to ensure it’s working safely.
What should I do if I take too much?
Taking too much flecainide can cause serious heart problems, including:
- Slow heartbeat
- Fainting
- Chest pain
- Seizures
Seek emergency medical attention immediately if you suspect an overdose.
What dose of flecainide is usually taken?
The usual dose depends on your condition and how well you respond to treatment:
- Adults: Typically 50–100 mg twice daily
- The dose may be adjusted based on heart rhythm monitoring and kidney function
Always follow your doctor’s instructions exactly.
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What are the side effects of flecainide?
Common side effects include:
- Dizziness or lightheadedness
- Blurred vision
- Nausea
- Fatigue
Serious side effects, like worsening arrhythmias, chest pain, or shortness of breath, require immediate medical attention.
How should I take flecainide?
Flecainide should be taken exactly as prescribed, usually as tablets. It can be taken with or without food. Swallow tablets whole with water.
When should flecainide be taken?
Flecainide is usually taken at regular intervals, such as every 12 hours. Stick to the same times each day to maintain steady levels in your body.
What are the brand names for flecainide?
Flecainide is available under different brand names, including:
- Tambocor
- Apocard
Final thoughts
Flecainide is a powerful medication for managing irregular heart rhythms. It should only be used under medical supervision, as incorrect use can be dangerous. Always attend follow-up appointments and speak to your doctor or pharmacist if you have any concerns.
