Lamotrigine is an anti-epileptic medication, also called an anticonvulsant. Lamotrigine is used either alone or in combination with other medications to treat epileptic seizures in adults and children. Lamotrigine is also used to delay mood episodes in adults with bipolar disorder (manic depression). The immediate-release form of lamotrigine (Lamictal, Lamictal ODT) can be used in children as young as 2 years old when it is given as part of a combination of seizure medications. However, this form should not be used as a single medication in a child or teenager who is younger than 16 years old.