Informational only — Not medical advice. Always consult a licensed healthcare provider.

Community data Updated 23 hours ago

Indications

Flecainide Acetate tablets belong to a group of medicines called anti-arrhythmics, which work by controlling the rate and rhythm of the heart. Doctors use Flecainide Acetate to treat these conditions: arrhythmias (irregular heart beat), tachycardia (heart beating too fast) and atrial fibrillation (rapid contractions of muscles in the heart). Your doctor needs to treat these conditions quickly and effectively so that more serious heart problems don't develop.

⚠️ Always consult a registered physician before taking any medicine.

Pharmacology

Flecainide blocks the fast inward sodium channels and then unbinds from them slowly during diastole, which prolongs the refractory period of the heart. The same blockade shortens the action potential in the Purkinjie fibers.

Flecainide also stops the delayed rectifier potassium channels from opening. This lengthens the action potential in ventricular and atrial muscle fibers. It blocks ryanodine receptor opening as well, so less calcium is released from the sarcoplasmic reticulum, and that reduces depolarization of the cells.

Pregnancy & Breastfeeding

If you are pregnant, breast-feeding, think you might be pregnant or are planning to have a baby, talk to your doctor or pharmacist before you take Flecainide Acetate.

⚠️ Talk to your doctor before taking any medicine during pregnancy or while breastfeeding.

Dosage Reference

⚠️ Reference ranges from official sources only. Consult your doctor for personalized dosing.

Adults: Supraventricular arrhythmias (an irregular heartbeat that starts in the upper chambers of your heart): the recommended dose is one 50 mg tablet twice a day. Your doctor may prescribe up to a total dose of 300 mg daily. Ventricular arrhythmias (an irregular heartbeat that starts in the lower chambers of your heart): the recommended dose is one 100 mg tablet twice a day. Your doctor may prescribe up to a total dose of 400 mg daily. If you are elderly, or have kidney or heart problems, the doctor may tell you to take a lower dose. While you are taking this medicine, your doctor may ask you to have check-ups. These are to make sure the medicine is working properly and that the dose is right for you. Use in Children: Flecainide Acetate tablets are not recommended for children under 12 years of age. However, dairy products such as milk, infant formula and possibly yoghurt may reduce how much flecainide acetate is absorbed in children and infants.

Side Effects & Interactions