Flecainide
About Flecainide
Flecainide is a prescription medication used to prevent and manage serious, irregular heart rhythms (arrhythmias). It works by stabilizing the electrical signals in your heart to help it beat in a regular, steady pattern. Flecainide is typically prescribed for patients who experience rapid or chaotic heartbeats in either the upper or lower chambers of the heart.
For Flecainide to work effectively, you must take it consistently at the same times every day, usually twice daily. You can take it either with or without food, but you must choose one method and stick to it with every dose, as food can affect how the medicine is absorbed. Incorporating heart-healthy habits, such as reducing stress and limiting stimulants, can also help support your treatment results.
While taking Flecainide, some people may experience mild side effects like dizziness or brief vision changes. However, you must contact your doctor immediately if you notice serious symptoms, such as a feeling that your heart is beating even faster or more irregularly, severe shortness of breath, or chest pain.
Do not take this if you have certain pre-existing heart conditions. Specifically, people who have had a recent heart attack, those with severe heart failure, or individuals with certain types of heart block (unless they have a working pacemaker) should not take Flecainide. Always discuss your complete medical history with your doctor before starting therapy.
Flecainide can interact with several other substances. Mixing Flecainide with alcohol can increase your risk of dizziness and may worsen heart rhythm issues. It is highly important to consult your healthcare provider if you are pregnant, planning to become pregnant, breastfeeding, or if you are an older adult, as your dose may require careful monitoring.
Uses of Flecainide
Medicinal Benefits
Flecainide helps restore and maintain a normal heart rhythm, supporting healthy heart function and improving overall quality of life. By controlling abnormal heart rhythms, it helps reduce symptoms and supports better daily functioning.
Benefits may include:
- Helps restore and maintain a regular, steady heartbeat.
- Reduces symptoms such as palpitations, fluttering, and a racing heartbeat.
- Helps relieve shortness of breath, dizziness, and discomfort associated with certain heart rhythm disorders.
- Supports improved blood flow and overall cardiovascular function.
- Helps reduce the risk of recurrent abnormal heart rhythm episodes and related hospital visits.
Improves daily comfort, physical activity, and overall quality of life.
Directions for Use
- Flecainide can be taken with or without food. However, avoid taking it with dairy products, as they may interfere with its absorption.
- It is usually taken twice daily or as prescribed by your doctor.
- Swallow Flecainide as a whole with a glass of water.
- Do not crush, chew, or break it.
Storage
Side Effects of Flecainide
Common Side Effects (Usually mild):
- Dizziness or lightheadedness
- Vision changes, such as blurred vision or difficulty focusing
- Mild headache
- Nausea or stomach upset
- Mild shortness of breath during physical activity
Serious Side Effects (Call a doctor right away):
- A new or worsening irregular heartbeat (feeling like your heart is pounding, skipping beats, or racing)
- Severe dizziness, fainting, or extreme weakness
- Swelling in your ankles, feet, or lower legs, or sudden weight gain
- Severe chest pain or difficulty breathing while resting
- Signs of a severe allergic reaction, such as a skin rash, itching, hives, or swelling of the face, lips, or throat
Medicines Containing this Salt
View AllDrug Warnings
- Attend regular monitoring appointments: Keep all scheduled medical appointments for electrocardiograms (ECGs) and blood tests so your doctor can monitor your heart rhythm and ensure the medicine remains safe and effective.
- Rise slowly to prevent dizziness: Stand up gradually from a sitting or lying position to help reduce the risk of dizziness, lightheadedness, and falls.
- Inform healthcare providers before treatment: Tell your doctor, dentist, pharmacist, or emergency healthcare personnel that you are taking Flecainide before receiving any treatment or undergoing medical procedures.
- Check before taking over-the-counter medicines: Do not use over-the-counter cold, cough, or allergy medicines without consulting your doctor or pharmacist, as some products contain stimulants that may trigger abnormal or rapid heartbeats.
Drug Interactions
- Beta-blockers and calcium channel blockers: Taking these medicines alongside Flecainide may further slow your heart rate and reduce the heart's pumping ability.
- Heart medicines (e.g., digoxin): Flecainide may increase digoxin levels in the body, raising the risk of side effects and toxicity.
- Other heart rhythm medicines (e.g., amiodarone): Combining these with Flecainide may increase its levels in the body and raise the risk of serious side effects. Your doctor may need to adjust the dose.
- Acid-reducing medicines (e.g., cimetidine): These medicines may increase the amount of Flecainide in the bloodstream, increasing the risk of side effects.
Drug-Drug Interactions Checker List:
Safety Advice
Alcohol
unsafeFlecainide may interact with alcohol. Therefore, avoid alcohol intake while taking Flecainide.
Pregnancy
consult your doctorFlecainide is not recommended for use in pregnant women unless necessary. Before taking this medicine, the risks and benefits should be discussed with the doctor.
Breast Feeding
consult your doctorFlecainide is not recommended for use in breastfeeding women unless absolutely necessary. If the medicine is used, close monitoring of the infant for undesired effects is necessary.
Driving
unsafeFlecainide may cause symptoms such as dizziness, fainting, blurred vision, and double vision in some patients. You are advised not to perform any activities, such as driving a vehicle or operating machinery, if you experience any of these symptoms during treatment with this medicine.
Liver
cautionFlecainide should be used with extreme caution in patients with liver impairment due to the increased risk of severe adverse effects. Regular monitoring of liver function tests is necessary while receiving this medicine. Appropriate dose adjustments or replacement with a suitable alternative may be required in some cases based on the clinical condition.
Kidney
cautionFlecainide should be used with extreme caution in patients with kidney impairment due to the increased risk of severe adverse effects. Regular monitoring of kidney function tests is necessary while receiving this medicine. Appropriate dose adjustments or replacement with a suitable alternative may be required in some cases based on the clinical condition.
Children
cautionFlecainide may not be recommended in infants (<1 year). But may be used with caution in children by the advice of your doctor. Your doctor will adjust the dose based on the height and weight of the children.
Habit Forming
Diet & Lifestyle Advise
- Keep your salt intake stable: Sudden changes in the amount of sodium in your diet can change how much of the medicine stays in your body. Avoid starting an extremely low-salt diet or consuming high-sodium foods abruptly without consulting your doctor.
- Limit caffeine and stimulants: Excess caffeine from coffee, energy drinks, or tea can trigger irregular heartbeats and reduce the effectiveness of your treatment.
- Avoid heavy alcohol consumption: Alcohol can irritate the heart muscle and increase the risk of dizziness while taking Flecainide.
- Stay hydrated: Drink moderate amounts of water throughout the day to support overall cardiovascular health and keep your kidneys functioning well.
Special Advise
- Low salt diet and regular exercise are recommended along with Flecainide for effective results.
- Regular electrocardiogram (ECG) should be done to see the effect of Flecainide on your heartbeat.
- Blood tests like sodium and potassium levels, kidney function, and lung function should be checked before starting the treatment with this medicine.
Patients Concern
Disease/Condition Glossary
Arrhythmias: Arrhythmias (irregular heartbeat) is a condition in which your heart beats abnormally, too fast, or too slow. Symptoms of irregular heartbeat include chest pain, shortness of breath, and fast or slow heartbeat. 60 to 100 beats per minute are generally considered a normal heart rate. Pulse indicates your heart rate or the number of times your heart beats in a minute. Normally, the pulse rate increases when you exercise and is slower when you are at rest. Tachycardia is when the heart beats faster than normal, and bradycardia is when the heart beats too slowly. Atrial fibrillation is the most common type of arrhythmia, which causes an irregular and fast heartbeat. Your doctor may run certain tests to diagnose if you have an arrhythmia. Treatment to restore a normal heart rhythm may include medicines like Flecainide, an implantable cardioverter-defibrillator (ICD), a pacemaker, or surgery.
FAQs
Flecainide is used to treat irregular heartbeats. It is prescribed for patients with ventricular tachycardia, paroxysmal supraventricular tachycardia, atrial fibrillation, or flutter.
Flecainide works by restoring the heart rhythm by blocking abnormal electrical signals in the heart. This helps to maintain a regular and steady heartbeat.
It may take several weeks for Flecainide to show its effect. You are recommended to continue taking Flecainide for as long as your doctor prescribes it, and do not stop taking Flecainide suddenly as it may worsen your heart problems. However, if you experience difficulty while taking Flecainide, please consult your doctor.
You are recommended to avoid taking Flecainide if you have a heart rhythm disorder known as Brugada syndrome, reduced or impaired ventricular function, cardiogenic shock, severe bradycardia (less than 50 bpm), severe hypotension, sinus node dysfunction, atrial condition defects, second degree or greater atrioventricular block, bundle branch block or distal block.
Yes, Flecainide may cause double vision and blurred vision in some people. Therefore, be cautious before driving or using machinery.
No, Flecainide is not a beta blocker. It belongs to a class of medications called antiarrhythmics, specifically Class IC. Flecainide works by slowing the conduction of electrical impulses in the heart, helping to regulate abnormal heart rhythms (arrhythmias).
Weight gain is not typically a side effect of Flecainide. However, if you experience any unusual weight change while taking this medication, consult your doctor right away.
It is recommended to avoid taking Flecainide with milk or dairy products, as they may interfere with the medication's absorption. It's best to take Flecainide on an empty stomach or with water.
Flecainide helps to regulate and stabilize your heart rate, ensuring it beats at a normal and healthy pace, and one of its effects is to slow the heart rate.
Flecainide is a highly effective medication when used properly and under the guidance of a doctor. While it does require careful monitoring, it can be a valuable treatment option for managing certain heart rhythm disorders.
Flecainide and metoprolol can be taken together, but only under the close supervision of a doctor. This combination requires careful monitoring, as both medications can affect heart rate and rhythm.
Your doctor determines the dosage of Flecainide based on your specific medical condition and needs. Always follow your doctor's personalized instructions.
Some people taking Flecainide may experience insomnia or other sleep-related issues as a side effect. However, this is not a common effect for most people.
Common side effects of Flecainide may include dizziness, blurred vision, breathlessness, arrhythmia (irregular heartbeats), headache, double vision, weakness, fatigue, fever, and oedema (swelling). Most of these side effects do not require medical attention and gradually resolve over time. However, if the side effects persist, please consult your doctor.
It is highly recommended to limit or avoid alcohol. Alcohol can trigger irregular heartbeats and increase side effects like dizziness or lightheadedness while taking Flecainide. Talk to your doctor about what is safe for you.
Yes, your doctor will likely request periodic blood tests to monitor your kidney function and check the levels of the medicine in your blood, alongside regular ECGs to monitor your heart rhythm.
While its main effect is on heart rhythm, it can sometimes cause minor changes in blood pressure or lead to dizziness when standing. Your doctor will monitor your blood pressure during your routine checkups.
Many over-the-counter cold and allergy products contain decongestants (like pseudoephedrine) that act as stimulants and can trigger irregular heartbeats. Always talk to your doctor or pharmacist before taking any new over-the-counter medicine.
Author Details
