Overview
Tambocor was a prescription drug approved by the U.S. Food and Drug Administration (FDA) to prevent paroxysmal supraventricular tachycardias, paroxysmal atrial fibrillation/flutter, and documented ventricular arrhythmias. Tambocor was referred to by its drug name, flecainide.

Tambocor was an antiarrhythmic agent. It was believed to work by influencing the electrical system of the heart.

How was it taken?
Prescribing information stated that Tambocor was generally taken twice a day.

Tambocor came in tablet form.

Side effects
The FDA-approved label for Tambocor listed common side effects including headache, dizziness, fatigue, weakness, depression, anxiety, tremors, sensation of numbness or tingling, nausea, vomiting, diarrhea, and constipation.

Rare but serious side effects listed for Tambocor included new or worsened arrhythmias, new or worsened congestive heart failure, and increased risk for death.

For more details about this treatment, visit:
Flecainide — GoodRx