Skip to main content
An official website of the United States government

ethosuximide

A succinimide with anticonvulsant activity. The exact mechanism of action is not entirely understood, but most likely ethosuximide exerts its effects by partial antagonism of T-type calcium channels of the thalamic neurons. This leads to a decrease in burst firing of thalamocortical neurons, which stabilizes the nerve activity in the brain and prevents seizures.
US brand name:Zarontin
Chemical structure:3-ethyl-3-methylpyrrolidine-2,5-dione
NSC code:64013
Search NCI's Drug Dictionary