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What Is Mexiletine Used For?

How Does This Medicine Work?

Mexiletine belongs to a group of medications known as Class IB antiarrhythmics. Like other Class IB antiarrhythmia medications, it works by blocking sodium channels in the heart. This slows down the speed at which electrical impulses move through the heart, which helps stabilize the heart rhythm.

Can Children Use It?

This medication is not approved for use in children, as it has not been adequately studied in this age group. Talk to your child's healthcare provider about the risks and benefits of using mexiletine in children.

Is It Safe for Older Adults to Use Mexiletine?

Because older adults may be more likely to have other medical conditions, they may be more sensitive to the side effects of mexiletine. Therefore, in general, older adults who take this medicine should be carefully monitored.

What About Off-Label Uses?

On occasion, your healthcare provider may recommend this medication for treating something other than the conditions discussed in this article. This is called an "off-label" use. Mexiletine may be prescribed off-label to treat:
  • Arrhythmias in children
  • Nerve pain
  • Fibromyalgia
  • Muscle contractions or spasms due to a variety of neurological disorders.
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Mexiletine Drug Information

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