Pregabalin Versus Levetiracetam In Partial Seizures

• Drug: pregabalin
  
  300, 450, 600 mg/day administered orally, BID until seizure control/improvement or intolerable side effects
• Drug: levetiracetam
  
  1000, 2000, 3000 mg/day administered orally, BID until seizure control/improvement or intolerable side effects

• Active Comparator: B
  
  Intervention: Drug: pregabalin
• Active Comparator: A
  
  Intervention: Drug: levetiracetam

Inclusion Criteria:

• Subjects (male or female) must be > 18 years of age, with a diagnosis of epilepsy with partial seizures, as defined in the International League Against Epilepsy (ILAE) classification of seizures.
• Partial seizures may be simple or complex, with or without secondary tonic-clonic generalization.
• Subjects must be have been diagnosed with epilepsy for at least 2 years, and must have been unresponsive to treatment with at least two but no more than five prior antiepileptic drugs (AEDs), and at the time of study enrollment are on stable dosages of 1 or 2 standard AEDs.

Exclusion Criteria:

• Females who are pregnant, breastfeeding, or intend to become pregnant during the course of the trial will be excluded
• Subjects with other neurologic illness that could impair endpoint assessment, or subjects with Lennox-Gastaut syndrome, absence seizures, status epileptics within the 12 months prior to trial entry, or with seizures due to an underlying medical illness or metabolic syndrome, will be excluded.