Lamotrigine is primarily used to treat epilepsy by controlling various types of seizures, including partial seizures, primary generalized tonic-clonic seizures, and seizures associated with Lennox-Gastaut syndrome. It works by stabilizing electrical activity in the brain to prevent seizures

. Additionally, lamotrigine is used as a mood stabilizer in adults with bipolar I disorder to help prevent episodes of depression and other abnormal moods, although it is not effective for treating acute mood episodes

. In summary, lamotrigine is used for:

• Treating epilepsy and reducing seizure frequency
• Preventing depressive episodes in bipolar disorder