Study to Evaluate the Safety and Effectiveness of USL255 in Patients With Refractory Partial-onset Seizures

Exclusion Criteria

• •Have a history of seizure episodes lasting less than 30 minutes in which several seizures occur with such frequency that the initiation and completion of each individual seizure cannot be distinguished, within 3 months prior to Visit 1.
• •Have a history of pseudoseizures, or status epilepticus, within 3 months prior to Visit 1.
• •Have a history of metabolic acidosis, nephrolithiasis, ureterolithiasis, or narrow angle glaucoma.
• •Have a history of suicidal attempts, suicidal ideation, or uncontrolled psychiatric illness within 2 years of Visit 1.
• •Currently taking, or have taken felbamate within the past 18 months, or have taken vigabatrin in the past.
• •Have taken topiramate within the past 6 months.