Package Leaflet: Information for the User
FlecainideNormon100 mg EFG Tablets
Flecainide acetate
Read all of this leaflet carefully before you start taking this medicine because it contains important information for you.
Contents of the Package Leaflet
Flecainide belongs to a group of medicines called anti-arrhythmics.
This medicine is indicated for the treatment of different types of arrhythmias (alterations of the heart rhythm and frequency).
Do not take Flecainide Normon
Warnings and precautions
Consult your doctor or pharmacist before taking Flecainide Normon:
Children and Adolescents
The use of flecainide is not recommended in children under 12 years of age.
Elderly Patients
In these patients, the elimination rate may be reduced, so it should be taken into account when making dose adjustments.
Taking Flecainide Normon with other medicines
Tell your doctor or pharmacist if you are using, have recently used, or might use any other medicines.
Be cautious if you are using the following medicines:
Interference with laboratory tests
If you are going to have any diagnostic tests, inform your doctor that you are using this medicine, because it may alter the results.
Taking Flecainide Normon with food and drinks
The absorption of flecainide tablets is not modified in the presence of food.
Pregnancy and Breastfeeding
If you are pregnant or breastfeeding, think you may be pregnant or are planning to have a baby, ask your doctor or pharmacist for advice before taking this medicine.
Pregnancy
Flecainide should only be used during pregnancy if the benefits outweigh the risks.BreastfeedingFlecainide is excreted in breast milk. Although the risk of the baby suffering adverse effects is very low, flecainide should only be used during breastfeeding if the benefits outweigh the risks.
Driving and using machines
During treatment, side effects (dizziness and visual disturbances) may occur, so if you notice these symptoms, you should not drive or operate machinery.
This medicine contains less than 23 mg of sodium (1mmol) per tablet; it is essentially "sodium-free".
Follow exactly the administration instructions of this medicine indicated by your doctor or pharmacist. If in doubt, consult your doctor or pharmacist again. Remember to take your medicine.
Your doctor will indicate the duration of your treatment with this medicine.
This medicine is taken orally. It can be taken before, during, or after meals. The tablets should be taken whole with a sufficient amount of liquid - a glass of water.
The recommended dose is one tablet twice a day.
Your doctor may recommend a maximum total dose of up to 400 mg (4 tablets) per day, depending on your particular characteristics.
The tablet can be divided into two equal halves.
If you have severe hepatic and renal insufficiency, your doctor may monitor your flecainide blood levels.
Patients with kidney disease
The maximum initial dose will not exceed 100 mg per day.
If you think the action of flecainide is too strong or too weak, tell your doctor immediately.
Use in Children
Currently, there are limited data in children, and therefore, the use of flecainide should be supervised by a cardiologist accustomed to managing arrhythmias in the pediatric population.
If you take more Flecainide Normon than you should
In case of overdose or accidental ingestion, consult your doctor or pharmacist immediately or call the Toxicology Information Service, phone 91 562 04 20, indicating the medicine and the amount ingested.
If you forget to take Flecainide Normon
If you forget to take a dose, take the next dose when it is due and continue taking the tablets as your doctor has recommended.
Do not take a double dose to make up for forgotten doses.
If you forget to take more than one dose, or your irregular and rapid heartbeat seems to have worsened, consult your doctor immediately.
If you stop taking Flecainide Normon
Do not stop treatment, as this may cause arrhythmias, sometimes very severe.
If you have any further questions on the use of this medicine, ask your doctor or pharmacist.
Like all medicines, this medicine can cause side effects, although not everybody gets them.
Very common side effects (affect more than 1 in 10 patients)
Common side effects (affect more than 1 in 100 patients)
Uncommon side effects (affect less than 1 in 100 patients)
Rare side effects (affect less than 1 in 1,000 patients)
Very rare side effects (affect less than 1 in 10,000 patients)
Frequency not known (cannot be estimated from the available data)
Reporting of side effects
If you experience any side effects, talk to your doctor or pharmacist. This includes any possible side effects not listed in this leaflet. You can also report side effects directly through the Spanish Medicines and Healthcare Products Agency's website: https://www.notificaram.es. By reporting side effects, you can help provide more information on the safety of this medicine.
Keep this medicine out of the sight and reach of children.
No special storage conditions are required.
Do not use this medicine after the expiry date which is stated on the packaging after "EXP". The expiry date is the last day of the month shown.
Do not use this medicine if you notice visible signs of deterioration.
Medicines should not be disposed of via wastewater or household waste. Ask your pharmacist how to dispose of medicines no longer required. These measures will help protect the environment.
Composition of Flecainide Normon
Appearance of the product and pack contents
White or almost white, round, biconvex tablets, with a break line and marked with "F" and "100" on one side. Each pack contains 30 or 60 tablets.
Marketing authorization holder and manufacturer
LABORATORIOS NORMON, S.A.
Ronda de Valdecarrizo, 6 – 28760 Tres Cantos – Madrid (SPAIN)
Date of last revision of this leaflet: December 2014.
Detailed information on this medicine is available on the website of the Spanish Agency for Medicines and Healthcare Products: http://www.aemps.gob.es
The average price of FLECAINIDE NORMON 100 mg TABLETS in October, 2025 is around 7.98 EUR. Prices may vary depending on the region, pharmacy, and whether a prescription is required. Always check with a local pharmacy or online source for the most accurate information.