Lacosamide is indicated as adjunctive therapy ... the maximum recommended dose is 150 mg daily in one to two divided doses. A maximum of a single daily dose of 75 mg per day is recommended when ...

the most common adverse events occurring at an incidence of at least 10% in the lacosamide 400-mg/day treatment group were dizziness (29.5%), headache (13.8%), nausea (11.3%) and diplopia (10.4%).