Physiologic Monitoring of Antidepressant Treatment Response

venlafaxine 37.5 mg. or placebo will be prepared by the UCLA Pharmacy for the initial phase of the study. For the open-label phase of the study, subjects will receive the medication and dosage that is clinically indicated by the subject's primary physician in the community. After a one-week placebo lead-in, subjects will be randomly assigned to receive one capsule of either venlafaxine or placebo, with the dosage increase every two days until subjects receive four capsules daily (subjects will achieve a dose 150 mg. of venlafaxine after 7 days). The first dose will be administered in the morning, with subsequent capsules added on a b.i.d. schedule

venlafaxine 37.5 mg. or placebo will be prepared by the UCLA Pharmacy for the initial phase of the study. For the open-label phase of the study, subjects will receive the medication and dosage that is clinically indicated by the subject's primary physician in the community. After a one-week placebo lead-in, subjects will be randomly assigned to receive one capsule of either venlafaxine or placebo, with the dosage increase every two days until subjects receive four capsules daily (subjects will achieve a dose 150 mg. of venlafaxine after 7 days). The first dose will be administered in the morning, with subsequent capsules added on a b.i.d. schedule