8. Concurrent antidepressants or antipsychotics. Subjects, who have elected, in consultation with their health care provider, to discontinue any antidepressants or antipsychotics, must be off the medications for a minimum of 2 weeks prior to study randomization. Stable bedtime doses of sleep agents (e.g., trazodone ≤ 200mg; eszopiclone; zolpidem; lorazepam) will be allowed as long as the dose has been stable for at least 2 weeks prior to study randomization. Benzodiazepines taken for other than sleep are not permitted.