Let your doctor know if you are taking any other medications or supplements to avoid adverse drug interactions. Before taking Mexiletine, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. Furthermore, before using this medication, tell your doctor or pharmacist your medical history, especially of other heart problems, liver problems, and seizure disorders. This drug may make you dizzy or cause blurred vision. Do not drive, use machinery, or do any activity that requires alertness or clear vision until you are sure you can perform such activities safely. Limit alcoholic beverages. Consult your doctor before taking this medicine if you are pregnant. This medication passes into breast milk. However, this drug is unlikely to harm a nursing infant. Do consult your doctor before breastfeeding to be safe.
