くすりのしおり

Internal
Published: 7/2015

The information on this sheet is based on approvals granted by the Japanese regulatory authority. Approval details may vary by country. Medicines have adverse reactions (risks) as well as efficacies (benefits). It is important to minimize adverse reactions and maximize efficacy. To obtain a better therapeutic response, patients should understand their medication and cooperate with the treatment.
Brand name :
Tambocor Fine Granules10%
 Active ingredient:
Flecainide acetate
 Dosage form:
white fine granule
 Print on wrapping:

Effects of this medicine

This medicine suppresses sodium channel in cardiac muscle to delay the cardiac excitation conduction, and it consequently controls tachyarrhythmia.
It is usually used in the treatment of paroxysmal atrial fibrillation, paroxysmal atrial flutter and ventricular tachyarrhythmia.

Before using this medicine, be sure to tell your doctor and pharmacist

  • If you have previously experienced any allergic reactions (itch, rash, etc.) to any medicines.
    If you have: congestive heart failure, atrioventricular block, sinoatrial block, arrhythmia after myocardial infarction, myocardial infarction, valvular heart disease, cardiomyopathy, or hepatic or renal dysfunction.
    If you are taking ritonavir (Norvir), mirabegron (Betanis) or telaprevir (Telavic).
  • If you are pregnant, possiby pregnant or breastfeeding.
  • If you are taking any other medicinal products. (Some medicines may interact to enhance or diminish medicinal effects. Beware of over-the-counter medicines and dietary supplements as well as other prescription medicines.)

Dosing schedule (How to take this medicine)

  • Your dosing schedule prescribed by your doctor is ((        to be written by a healthcare professional))
  • For paroxysmal atrial fibrillation and paroxysmal atrial flutter: In general, for adults, start to take 1 g (100 mg of the active ingredient) daily. If the effect is insufficient, the dosage is increased up to 2 g (200 mg) daily to take in 2 divided doses. The dosage may be decreased according to the age or symptoms.
    For ventricular tachyarrhythmia: In general, for adults, start to take 1 g (100 mg of the active ingredient) daily. If the effect is insufficient, the dosage is increased up to 2 g (200 mg) daily to take in 2 divided doses. The dosage may be adjusted according to the age or symptoms.
    For children's tachyarrhythmia (paroxysmal atrial fibrillation, paroxysmal atrial flutter, paroxysmal supraventricular, ventricular): In general, for infants 6 months old or over, toddlers, and children, take 0.5 to 1 g/m2 (body surface area) [50 to 100 mg/m2 (body surface area) of the active ingredient] daily in 2 to 3 divided doses. The dosage may be adjusted according to the age or symptoms. The maximum dose is 2 g/m2 (200 mg/m2) daily.
    In general, for infants under the age of 6 months, take 0.5 g/m2 (body surface area) [50 mg/m2 (body surface area) daily of the active ingredient] in 2 to 3 divided doses. The dosage may be adjusted according to the age or symptoms. The maximum dose is 2 g/m2 (200 mg/m2) daily. This medicine contains 100 mg of the active ingredient in 1 g.
    Strictly follow the instructions.
  • If you miss a dose, take a dose as soon as possible when you remember that you missed a dose. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. You should never take two doses at one time.
  • If you accidentally take more than your prescribed dose, consult with your doctor or pharmacist.
  • Do not stop taking this medicine unless your doctor instructs you to do so.

Precautions while taking this medicine

  • The ingestion of breast milk or dairy products may reduce the effect of this medicine. If this medicine is administered to infants or discontinue ingesting breast milk or dairy products, check with your doctor or pharmacist.

Possible adverse reactions to this medicine

The most commonly reported adverse reactions include palpitation, bradycardia, atrial fibrillation, itch, rash, chest discomfort, dizziness, headache, nausea, abdominal pain, diplopia (double vision), photophobia (dazzle) and abnormal vision. If any of these symptoms occur, consult with your doctor or pharmacist.
The symptoms described below are rarely seen as initial symptoms of the adverse reactions indicated in brackets. If any of these symptoms occur, stop taking this medicine and see your doctor immediately.
  • dizziness, palpitation, shortness of breath, faint  [ventricular tachycardia, ventricular fibrillation, atrial flutter, high-grade atrioventricular block, transient cardiac arrest, sinus arrest, deterioration of heart failure, Adams-Stokes attack]
  • nausea, vomiting, loss of appetite, yellowing in the skin or white of eyes  [hepatic dysfunction, jaundice]
The above symptoms do not describe all the adverse reactions to this medicine. Consult with your doctor or pharmacist if you notice any symptoms of concern other than those listed above.

Storage conditions and other information

  • Keep the medicine out of the reach of children. Store it away from direct sunlight, heat and moisture.
  • Do not store the remainder and ask your pharmacist or medical institution how to discard it.

For healthcare professional use only : Day Month Year

For further information, talk to your doctor or pharmacist.

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