Cinromide possesses antiepileptic activity in various animal models. However, in the experiments for human, this drug had a very limited clinical usefulness and was withdrawn from testing by its manufacturer. The lack of an antiepileptic response may have been due to factors other than species differences but indicates that a positive result of a drug in animal models is not the sole factor necessary to predict beneficial antiepileptic activity in humans. In addition, cinromide was studied for the patients with Lennox-Gastaut Syndrome, as a result, there was no difference between cinromide and placebo in terms of seizure reduction or global evaluations.