Make sure your doctor knows if you are pregnant or breastfeeding, or if you have kidney disease, liver disease, diabetic neuropathy, or a history of depression or mental illness. Tell your doctor if you also have heart problems such as heart attack, heart block, heart failure, or heart rhythm problems (such as prolonged PR interval or sick sinus syndrome).
If you develop any unusual or strange thoughts and behavior while taking lacosamide, be sure to discuss it with your doctor. Some changes that have occurred in people taking this medicine are like those seen in people who drink too much alcohol. Other changes might be confusion, worsening of depression, hallucinations (seeing, hearing, or feeling things that are not there), suicidal thoughts, and unusual excitement, nervousness, or irritability.
This medicine may make you dizzy, drowsy, clumsy, or less alert. Avoid driving, using machines, or doing anything else that could be dangerous if you are not alert.
Lacosamide may cause serious allergic reactions affecting multiple body organs such as the liver or kidney. Check with your doctor right away if you have the following symptoms: fever, dark urine, headache, rash, stomach pain, tiredness, or yellowing of the skin or the whites of your eyes.
Do not stop using this medicine suddenly without asking your doctor. You may need to slowly decrease your dose before stopping it completely.
Your doctor will need to check your progress at regular visits while you are using this medicine. Be sure to keep all appointments.