- Have a diagnosis of epilepsy with partial seizures (as defined in the ILAE
Classification of Seizures) and be currently taking 1-3 AEDs
- Have a minimum of 4 partial seizures occurring over at least 2 days during the 6-week
baseline with no 28-day period free of partial seizures
- Have a treatable cause of seizures
- Are currently receiving treatment with CNS-active compounds (exception: single
antidepressant, hypnotics, and standard AEDs), vigabatrin, Felbatol (felbamate),
Neurontin (gabapentin)