The following side effects may get better over time as your body gets used to the medication. Let your healthcare provider know immediately if you continue to experience these symptoms or if they worsen over time.
Common Side Effects
- Nausea, vomiting, heartburn (40%)
- Dizziness (19-26%)
- Tremor (13%)
- Nervousness (13%)
Less Common Side Effects
- Lack of balance
- Trouble sleeping
- Blurry vision
- Headache
- Pounding chest
- Chest pain
Mexiletine serious side effects
Contact your healthcare provider immediately if you experience any of the following.
- Severe allergic or skin reaction: rash, blistering or peeling of skin, hives, painful sores in your mouth or around your eyes, fever, trouble breathing, swollen lymph nodes
- Low blood pressure or abnormal heart rhythm: chest pain or discomfort, weakness, dizziness, fainting
- Heart failure: shortness of breath, swelling of feet or ankles, sudden weight gain, dizziness
- Serious liver problems: nausea, vomiting, not feeling hungry, pain in the right side of the stomach, yellowing of the whites of the eyes or skin, dark-colored urine, light-colored stool
Source: DailyMed
The following Mexiletine side effects have also been reported
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor as soon as possible if any of the following side effects occur:
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
More common
Dizziness or lightheadedness
nervousness
trembling or shaking of the hands
unsteadiness or difficulty in walking
Less common
Blurred vision
confusion
headache
numbness or tingling of fingers and toes
ringing in the ears
skin rash
slurred speech
trouble in sleeping
unusual tiredness or weakness
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.
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