A pharmaceutical composition including an amphiphilic pyridinium compound for treating neurological disorders or seizure disorders, in particular epilepsy, and other disorders of the nervous system. The pharmaceutical composition may be used as a primary treatment or as an adjuvant treatment. Administration of the amphiphilic pyridinium compound(s) may occur prior to the manifestation of symptoms characteristic of epilepsy, such that epilepsy is prevented, or alternatively, delayed in its progression.