Lamictal interacts with many other drugs used to treat seizures. Before taking Lamictal, tell your doctor about all other medications you are taking. You may require a dosage adjustment or special monitoring during treatment if you are taking Lamictal alone or with other medications to treat seizures. Continue to take all medications prescribed to treat seizures exactly as directed.

Birth control pills may decrease the amount of Lamictal in the body. A dosage adjustment may be necessary if birth control pills are started or stopped during treatment with Lamictal.

Lamictal may increase the effects of other drugs that cause drowsiness, including antidepressants, alcohol, antihistamines, sedatives (used to treat insomnia), pain relievers, anxiety medicines, and muscle relaxants. Dangerous sedation, dizziness, or drowsiness may occur if Lamictal is taken with any of these medications.

Drugs other than those listed here may also interact with Lamictal. Talk to your doctor and pharmacist before taking any prescription or over-the-counter medicines, including vitamins, minerals, and herbal products.