Trial to Assess Optimized Dosage of Lacosamide as add-on Therapy in Patients With Partial Onset Seizure

"Lacosamide : 50 mg tablets bid. Titration phase: (12 weeks) 100 mg/day: duration 1 to 3 weeks. Then uptitration to optimal therapeutic dose of 200 mg/day to 400 mg/day, in steps of 100 mg/day and a time period per step of 1 to 3 weeks.~Maintenance phase (12 weeks): Optimal therapeutic dose 200 mg/day to 400 mg/day.~Taper phase if needed: 3 to 4 weeks"