Tambocor (Flecainide Acetate)
Tambocor (flecainide acetate) Dosage and Side Effects
TAMBOCOR is used to prevent and treat life-threatening irregular heartbeats (arrhythmias). The medicine belongs to a class of drugs known as anti-arrhythmics. It works by slowing the electrical signals in the heart to stabilize the heart rhythm.
Warnings and Precautions
TAMBOCOR should only be used to treat people with a life-threatening irregular heartbeat.
The medicine contains a black-box warning because in clinical trials, TAMBOCOR raised the risk of either death or a second heart attack among trial participants who had already had a heart attack in the past two years.
There's not enough data to say whether TAMBOCOR also poses a serious risk to people who haven't had a heart attack in the past two years.
Tell your doctor if you have atrial fibrillation or atrial flutter (conditions in which the heart's upper chambers don't beat effectively) before taking this medicine. You may be at higher risk for developing a new irregular heartbeat.
Also, tell your doctor if you have, or have had, any of the following before taking TAMBOCOR:
- Heart block (a condition in which electrical signals don't pass through the heart normally)
- A pacemaker
- A heart attack, heart failure, or any type of heart disease
- High or low levels of potassium in the blood
- Liver disease
- Kidney disease
Let your healthcare provider know if you're on a strict vegetarian diet before taking this medicine, as the diet could lead to TAMBOCOR being cleared from your body more slowly.
TAMBOCOR may help control your irregular heartbeat, but it won't cure the condition. Continue to take the drug even if you feel well.
Don't stop taking TAMBOCOR without first talking to your doctor. Your condition may worsen if you stop taking the medicine suddenly.
Be sure to let your doctor know you're taking TAMBOCOR before having any type of surgery, including a dental procedure.
This medicine shouldn't be given to a child unless your doctor tells you to do so.
Pregnancy and TAMBOCOR
It's not known whether TAMBOCOR can harm an unborn baby.
Tell your doctor if you're pregnant, or might become pregnant, before taking this medicine.
TAMBOCOR is passed into breast milk. Talk to your doctor about the risks and benefits of breastfeeding while taking the drug.
Common Side Effects of TAMBOCOR
Tell your doctor if any of the following side effects become severe or don't go away:
- Vision changes
- Difficulty focusing
- Mild nausea
- Uncontrollable shaking of a part of the body
- Stomach pain
Serious Side Effects of TAMBOCOR
Tell your doctor right away if you experience any of the following serious side effects:
- Signs of anaphylaxis, a severe allergic reaction (hives, rash, itching, chest tightness, or swelling of the face, lips, tongue, or throat)
- Chest pain
- A fast, pounding, or irregular heartbeat
- Shortness of breath
- Extreme tiredness
- Severe nausea
- Loss of appetite
- Persistent cough with bloody mucus
- Swelling of the hands, feet, ankles, or lower legs
- Unusual bruising or bleeding
- Pain in the upper right part of the stomach
- Yellowing of the skin or eyes (jaundice)
- Flu-like symptoms
Interactions with this medication
Tell your doctor about all prescription, non-prescription, illegal, recreational, herbal, nutritional, or dietary drugs you're taking, especially:
- Adalat or Procardia (nifedipine)
- Ammonium chloride
- Beta blockers, such as Tenormin (atenolol), Trandate (labetalol), Lopressor or Toprol XL (metoprolol), Corgard (nadolol), or Inderal (propranolol)
- Calan or Verelan (verapamil)
- Carbatrol or Tegretol (carbamazepine)
- Cardizem or Tiazac (diltiazem)
- Citrocarbonate, Soda Mint, or baking soda (sodium bicarbonate)
- Clozaril (clozapine)
- Cordarone or Pacerone (amiodarone)
- Daranide (dichlorphenamide)
- Diamox (acetazolamide)
- Dilantin (phenytoin)
- HIV protease inhibitors, such as Norvir (ritonavir)
- Lanoxin (digoxin)
- Neptazane (methazolamide)
- Norpace (disopyramide)
- Tagamet (cimetidine)
TAMBOCOR and Milk
Drinking milk may affect how TAMBOCOR is absorbed in the body.
Talk to your doctor about this potential interaction.
TAMBOCOR and Other Interactions
TAMBOCOR may cause dizziness, blurred vision, or lightheadedness.
Use caution when driving or performing any activity that requires alertness.
TAMBOCOR and Alcohol
Alcohol may worsen certain side effects of TAMBOCOR.
Talk to your doctor about how much alcohol is safe to consume while taking this medicine.
Proper Use of this medication
TAMBOCOR comes as a tablet to take by mouth.
It's typically taken every 12 hours. Some people may take the medication every 8 hours.
Try to take TAMBOCOR around the same time each day.
Follow the instructions on your prescription label carefully. Don't take more or less TAMBOCOR than your doctor recommends.
Your first dose of TAMBOCOR may be given in a medical setting, so that your healthcare provider can monitor your response.
Symptoms of a TAMBOCOR overdose may include:
- Slow, fast, or irregular heartbeat
If you suspect an overdose, contact a poison control center or emergency room immediately.
Missed Dose of TAMBOCOR
If you miss a dose of TAMBOCOR, take it as soon as you remember.
But if it's almost time for your next dose, skip the missed dose and continue on your regular medication schedule.
Don't take extra medicine to make up for a missed dose of TAMBOCOR.
Other related products
The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.