 5. Subjects must be receiving at least 1 mood stabilizing medication, which may include an atypical antipsychotic e.g., aripiprazole, clozapine, olanzapine, quetiapine, risperidone, ziprasidone andor mood stabilizeranticonvulsant e.g, lithium, carbamazepine, valproatedivalproex, lamotrigine, oxcarbazepine medication for 1 week prior to baseline. Continued administration of benzodiazepines or sedative-hypnotics will be allowed only if the subject has been receiving the medication for 2 weeks prior to baseline. 