Ethosuximide 250 mg/5 mL as the active ingredient.

The ureide may be a 5,5-disubstituted barbituric acid, or it may be phenytoin, glutethimide, and ethosuximide.

Ethosuximide, sodium valproate or lamotrigine for absence seizures in children and adolescents.

The researchers grew the roundworm C. elegans in the presence of the 19 drugs and found that an anticonvulsant, ethosuximide, extended the worms' lives from an average of 17 days to an average of 20 days.