<unk> , sold as the brand name Lamictal among others, is a medication used to treat epilepsy and stabilize mood in bipolar disorder. For epilepsy, this includes focal seizures, tonic-clonic seizures, and seizures in Lennox-Gastaut syndrome. In bipolar disorder,<unk>  has not been shown to reliably treat acute depression; but for patients with bipolar disorder who are not currently symptomatic, it appears to be effective in reducing the risk of future episodes of depression. Common side effects include nausea, sleepiness, headache, vomiting, trouble with coordination, and rash. Serious side effects include lack of red blood cells, increased risk of suicide, Stevens–Johnson syndrome, and allergic reactions. Concerns exist that use during pregnancy or breastfeeding may result in harm.<unk>  is a phenyltriazine, making it chemically different from other anticonvulsants. Its mechanism of action is not clear, but it appears to inhibit release of excitatory neurotransmitters via voltage-sensitive sodium channels and voltage-gated calcium channels in neurons.<unk>  was first marketed in the United Kingdom in 1991, and approved for use in the United States in 1994. It is on the World Health Organization's List of Essential Medicines. In 2019, it was the 71st most commonly prescribed medication in the United States, with more than 10million prescriptions.
Lamotrigine
Mesuximide
Propazepine
Topiramate
Ethosuximide
Tiagabine
Carbamazepine
Levetiracetam