Flecainide (Flecainide acetate) — Uses, Dosage, Side Effects & Safety

Drug class: Class Ic antiarrhythmic

Overview

Flecainide is a prescription medication used to treat certain types of serious irregular heartbeats (arrhythmias), such as paroxysmal supraventricular tachycardia (PSVT) and paroxysmal atrial fibrillation or flutter. It helps restore normal heart rhythm and maintain a regular, steady heartbeat. Flecainide works by slowing the electrical signals in the heart that cause abnormal rhythms. This helps the heart beat more regularly and efficiently. It is typically used when other treatments have not worked or are not suitable. Patients should know that flecainide requires careful monitoring by a healthcare provider, as it can sometimes cause new or worsened arrhythmias. It is important to take this medication exactly as prescribed and attend all follow-up appointments.

Therapeutic uses

  • Prevention of paroxysmal supraventricular tachycardias (PSVT)
  • Prevention of paroxysmal atrial fibrillation/flutter (PAF)
  • Prevention of sustained ventricular tachycardia (VT) in patients without structural heart disease

Common side effects

  • Dizziness
  • Visual disturbances
  • Nausea
  • Palpitations
  • Dyspnea
  • Chest pain
  • Worsening of heart failure

Frequently Asked Questions about Flecainide

What is flecainide used for?

Flecainide is used to treat and prevent certain types of serious irregular heartbeats, such as paroxysmal supraventricular tachycardia (PSVT), paroxysmal atrial fibrillation, and paroxysmal atrial flutter.

How does flecainide work?

Flecainide works by blocking sodium channels in the heart, which slows abnormal electrical signals and helps restore a normal heart rhythm.

What are the most common side effects of flecainide?

Common side effects include dizziness, headache, blurred vision, nausea, and mild palpitations.

Can flecainide be used in patients with heart failure?

Flecainide is generally not recommended for patients with significant heart failure or structural heart disease due to increased risk of serious arrhythmias.

Is flecainide safe during pregnancy or breastfeeding?

Flecainide should only be used during pregnancy or breastfeeding if clearly needed and prescribed by a specialist. Discuss risks and benefits with your doctor.

How should I monitor while taking flecainide?

Regular ECGs, blood pressure checks, and sometimes blood levels of flecainide are recommended to ensure safety and effectiveness.

What should I do if I experience palpitations or fainting while on flecainide?

Contact your healthcare provider immediately or seek emergency care, as these may be signs of a serious heart rhythm problem.

Educational information only. Always consult a qualified healthcare professional before starting, stopping, or changing any medication.