Open-Label Extension Study to Assess the Safety and Seizure Frequency Associated With Lacosamide for Primary Generalized Tonic-Clonic Seizures in Subjects With Epilepsy

Lacosamide was supplied as 50 mg and 100 mg tablets. The starting Lacosamide dose was the same dose reached by a subject at the end of SP0961 (NCT01118949). At the beginning of SP0962, the dose may be maintained, or increased or decreased by 100 mg /day, as deemed clinically appropriate to optimize tolerability and seizure reduction. Dose increases should be no faster than 100 mg/ day per week up to a maximum of 800 mg/ day. Lacosamide was administered twice daily (approx. 12 hours apart, once in the morning and once in the evening) in 2 equally divided doses for up to a 56-week Treatment Phase. The Treatment Phase was followed by a 5-week End-of-Study Phase, during which subjects had to be tapered off Lacosamide at a recommended decrease rate of 200 mg/ day per week.