A healthcare provider may prescribe mexiletine (Mexitil^®) to treat certain irregular heart rhythms called ventricular arrhythmias. This medicine is approved for use in adults only and works by slowing down the electrical signals in the heart.

To help ensure a safe treatment, let your healthcare provider know about any other medical conditions you might have, such as a seizure disorder or a recent heart attack, as well as any other medications, vitamins, or supplements you are taking. Side effects may include tremors, lightheadedness, and gastrointestinal problems.

(Click Mexiletine for more information, including other side effects to look out for during treatment and details on when and how this medication is taken. You can also click any of the links in the box to the right for specific information.)

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Written by/reviewed by: Susan Lakey, PharmD, MPH, BCPP

Last reviewed by: Kristi Monson, PharmD

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