Form= capsule, route= oral administration. Matching placebo will be administered twice daily during 8 weeks.

The (HAM-A) is a 14-item scale designed to measure anxiety in individuals. Each question reflects a symptom of anxiety and physical as well as mental symptoms are represented. The answers range from 0 which signifies a complete lack of that symptom to 4, which indicates a very severe show of anxiety with that symptom.

The CGI-I is a 7-point scale that requires the clinician to assess how much the patient's illness has improved or worsened relative to a baseline state at the beginning of the intervention and rated as: 1=very much improved; 2=much improved; 3=minimally improved; 4=no change; 5=minimally worse; 6=much worse; 7=very much worse.

The HDRS17 is a clinician-administered rating scale designed to assess the severity of symptoms in patients diagnosed with depression with a score range of 0 to 52. Questions are related to symptoms such as depressed mood, guilt feelings, suicide, sleep disturbances, anxiety levels and weight loss. The higher the score, the more severe the depression.

The HAM-D6 is a 6-item subscale derived from the Hamilton Depression Rating Scale (HDRS17). The rating scale measures the severity of depressive symptomatology. Higher scores represent more severe depressive symptoms.

The IDS-C30 is a clinician administered 30 item depression specific severity rating scale designed to measure specific signs and symptoms of depression including melancholic, atypical and anxious features. Scores range from 0 to 84 with higher scores representing greater severity of depressive symptoms.

The IDS-C30 is a clinician administered 30 item depression specific severity rating scale designed to measure specific signs and symptoms of depression including melancholic, atypical and anxious features. The anxiety subscale includes five anxiety symptoms: anxious mood, somatic complaints, sympathetic arousal, panic, and gastrointestinal symptoms. The rating scale measures the severity of anxiety symptomatology. Higher scores represent more severe anxiety symptoms.

The WLQ is a 25-item questionnaire self-report rating scale developed to measure the on-the-job impact of chronic health problems and/or treatment ("work limitations"), with a recall period of the previous 2 weeks. It comprises four dimensions of limitations: handling time, physical, mental-interpersonal, and output demands. Patients respond to each item with options ranging from "Almost all of the time" to "none of the time", or "Does not apply to my job". The global score ranges from 0 to 100 with lower score indicating low level of work limitations.

The PSS is a 10-item, self-reported unidimensional instrument developed to measure perceived stress in response to situations in a person's life. Prevalence of an item within the last month is measured on a 5 point scale, ranging from "never" to "very often". Higher scores reflect higher levels of perceived stress.

The POMS-BF is a 30 item, self-report inventory in which a series of mood states (such as "Tense" or "Worn out") are rated based on how well each item describes the respondent's mood during the past week, including today. Items are rated on a 5-point scale with response options of: "Not at all", "A little", "Moderately", "Quite a bit" or "Extremely" with a global score range of 0 to 120 or individual domain scores on Tension-Anxiety, Depression-Dejection, Anger-Hostility, Vigor-Activity, Fatigue-Inertia, and Confusion-Bewilderment. Lower scores indicate better mood state.

The MOS Sleep-R is a self-reported scale containing 12 items addressing dimensions of sleep. It comprises six subscales: sleep disturbance, snoring, shortness of breath or headache, sleep adequacy, sleep somnolence, and sleep quantity. Items are answered on 5-point scales, where 1="all of the time," and 5="none of the time," 1 item (sleep latency) is answered on a 5 point scale from 1="0-15 minutes" to 5="more than 60 minutes." Score range of 0 to 100, where higher scores indicate fewer sleep-related problems. Duration of sleep is scored as the average number of hours slept per night.

The HDRS17 is a clinician-administered rating scale designed to assess the severity of symptoms in patients diagnosed with depression with a score range of 0 to 52. Questions are related to symptoms such as depressed mood, guilt feelings, suicide, sleep disturbances, anxiety levels and weight loss. The higher the score, the more severe the depression.

The HDRS17 is a clinician-administered rating scale designed to assess the severity of symptoms in patients diagnosed with depression with a score range of 0 to 52. Questions are related to symptoms such as depressed mood, guilt feelings, suicide, sleep disturbances, anxiety levels and weight loss. The higher the score, the more severe the depression.

The (HAM-A) is a 14-item scale designed to measure anxiety in individuals. Each question reflects a symptom of anxiety and physical as well as mental symptoms are represented. The answers range from 0 which signifies a complete lack of that symptom to 4, which indicates a very severe show of anxiety with that symptom.