<unk> , sold under the brand name Zarontin among others, is a medication used to treat absence seizures. It may be used by itself or with other antiseizure medications such as valproic acid.<unk>  is taken by mouth.<unk>  is usually well tolerated. Common side effects include loss of appetite, abdominal pain, diarrhea, and feeling tired. Serious side effects include suicidal thoughts, low blood cell levels, and lupus erythematosus. It is unclear if it is safe for the baby during pregnancy.<unk>  is in the succinimide family of medications. Its mechanism of action is thought to be due to antagonism of the postsynaptic T-type voltage-gated calcium channel.<unk>  was approved for medical use in the United States in 1960. It is on the World Health Organization's List of Essential Medicines.<unk>  is available as a generic medication. As of 2019 its availability was limited in many countries with concerns of price fixing in the United States.
Ethosuximide
Mesuximide
Levetiracetam
Phenytoin
Phenylpiracetam
Lamotrigine
Propazepine
Tiagabine