- Treatment with psychotropic drugs, anticholinergic drugs, anti-parkinson medication, α1-antagonists, α2-antagonists, carbamazepine, topiramate, felbamate, vigabatrin. Stable treatment with selective serotonin-reuptake-inhibitor (SSRI) having been given for at least 4 weeks prior to screening as supportive treatment of partial epilepsy can be accepted.