Read the Medication Guide provided by your pharmacist before you start taking lacosamide and each time you get a refill. If you have any questions, consult your doctor or pharmacist.

Take the liquid and immediate-release tablets by mouth with or without food as directed by your doctor, usually twice daily.

The manufacturer directs to swallow the tablet form of this medication whole. However, many similar drugs (immediate-release tablets) can be split/crushed. Follow your doctor's directions on how to take this medication.

If you are using the liquid form of this medication, carefully measure the dose using a special measuring device/spoon. Do not use a household spoon because you may not get the correct dose.

If you are using the extended-release capsules, take the medication by mouth with or without food as directed by your doctor, usually once daily. Swallow the capsules whole. Do not open, crush, or chew the capsules. Doing so can release all of the drug at once, increasing the risk of side effects.

The dosage is based on your medical condition and response to treatment. Children's dosage is also based on weight. To reduce your risk of side effects, your doctor may direct you to start this medication at a low dose and gradually increase your dose. Follow your doctor's instructions carefully.

This medication works best when the amount of drug in your body is kept at a constant level. Take this drug at evenly spaced intervals. To help you remember, take it at the same time(s) each day.

Do not stop taking this medication without consulting your doctor. Seizures may become worse when the drug is suddenly stopped. Your dose may need to be gradually decreased. Consult your doctor or pharmacist for more details.

Though it helps many people, this medication may sometimes cause addiction. This risk may be higher if you have a substance use disorder (such as overuse of or addiction to drugs/alcohol). Do not increase your dose, take it more often, or use it for a longer time than prescribed. Properly stop the medication when so directed.

Tell your doctor right away if your seizure control worsens (such as the number of seizures increases).