MK0249 for the Treatment of Cognitive Impairment in Patients With Schizophrenia (0249-016)

Exclusion Criteria

• •Patient has a major disease/disorder that may interfere with cognitive testing (such as mental retardation) and/or pose a risk upon study participation
• •Patient has a history of head trauma with loss of consciousness greater than 15 minutes
• •Patient has had warfarin treatment, MAO inhibitors, clonazepam or clozapine within 1 month of screening
• •Patient has had ECT treatment within 6 months of screening
• •Patient requires treatment with antihistamines or certain other medications listed in the protocol
• •Patient has a history of liver disease that has been active within the last 2 years, or a history of cancer within the past 5 years
• •Patient has a history of alcohol or drug dependence within the past year or alcohol or drug abuse within 3 months of screening