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Tambocor is the brand name for flecainide and is available as an oral tablet.

Tambocor is available as 50 mg, 100 mg, and 150 mg oral tablet.

Tambocor is an antiarrhythmic that is used for the:
Prevention of paroxysmal supraventricular tachycardias (PSVT)
Prevention of paroxysmal atrial fibrillation/flutter (PAF)
Prevention of ventricular arrhythmias

Tambocor is an antiarrhythmic. It works by blocking sodium channels, which play a major part in your heart’s electrical activity. When your heart is firing too quickly in an abnormal rhythm (arrhythmia), flecainide slows down the electricity to help your rhythm return to normal.

The typical adult starting dose is 50 mg to 100 mg by mouth twice a day, and the maximum recommended daily dose is 300 mg to 400 mg per day depending on the reason for use.
Children have specialized dosing based on height and weight. Your child’s heart specialist will decide the appropriate dose.

Tambocor is a safe and effective treatment when used for FDA licensed indications. However, like all medications, they may give you unwanted side effects. You should always discuss potential side effects with your physician to ensure the medication is suitable and right for you. You should not use this medication if you have pre-existing second- or third-degree AV block, or with right bundle branch block when associated with a left hemiblock (bifascicular block), unless a pacemaker is present to sustain the cardiac rhythm should complete heart block occur. Tambocor is also contraindicated in the presence of cardiogenic shock or known hypersensitivity to the drug.

Common side effects of Tambocor:

• Dizziness
• Changes in vision, such as blurriness or trouble focusing
• Shortness of breath
• Headache
• Nausea
• Tiredness
• Palpitations (feeling that your heart is racing)
• Chest pain
• Weakness or lack of energy
• Tremor
• Constipation
• Swelling due to fluid buildup
• Abdominal pain

Serious side effects are rare with Tambocor. Contact your healthcare provider immediately if you experience any of the following.

• New or worsened irregular heart rhythm, which can be too fast or too slow. Common symptoms include sudden chest pain or discomfort, palpitations or irregular pulse, dizziness or weakness, or unexplained fainting.
  Worsened heart failure symptoms

The following medications may interact with Tambocor:

• When amiodarone is added to Tambocor therapy, plasma flecainide levels may increase two-fold or more in some patients, if flecainide dosage is not reduced
• Drugs that inhibit cytochrome P450IID6, such as quinidine, might increase the plasma concentrations of Tambocor in patients that are on chronic flecainide therapy; especially if these patients are extensive metabolizers

Medicis

There are no adequate and well-controlled studies of Tambocor in pregnant women. It is unknown whether Tambocor can cause fetal harm when administered to a pregnant woman. Tambocor should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus.

• Flecainide