Flecainide Acetate

Medically Reviewed by Dr. Harshi Dhingra, M.D.

Last Reviewed: Apr 11, 2024

Pros & Cons


Flecainide Pros and Cons

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  • Flecainide works well to treat certain types of irregular heartbeat.
  • There is a lower-cost generic available.

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  • This medication can cause worsening of congestive heart failure and increased mortality (sudden death) in people with a recent myocardial infarction (heart attack).
  • Flecainide has a narrow therapeutic index. Blood levels of narrow therapeutic index drugs need to be maintained within a narrow range for them to be effective without causing adverse effects.