Key takeaways
Ethosuximide (Zarontin) and Lamotrigine (Lamictal) are both antiepileptic medications, but they have different uses and characteristics. Ethosuximide is specifically used to treat absence seizures (petit mal seizures) and is available in both pill and liquid forms. In contrast, Lamotrigine can treat a broader range of seizures, including partial and tonic-clonic seizures, and is also used for bipolar disorder. Lamotrigine comes in various forms, such as immediate-release, extended-release, chewable, and orally disintegrating tablets. Ethosuximide is known to cause drowsiness and requires regular blood tests to monitor liver and kidney health, while Lamotrigine can cause serious skin reactions and needs a slow dose increase to minimize this risk. Both medications are available in lower-cost generic forms, but Lamotrigine interacts with more medications, including birth control pills.
