
Level 2 results of the National Institute of Mental Health's STAR*D trial show that 25% of patients who switched to a new antidepressant after having no response to the SSRI citalopram in Level 1 became symptom-free within 14 weeks. Of the 1,439 patients studied, 727 were switched to sertraline (Zoloft, Pfizer), bupropion-SR, or venlafaxine-XR (Effexor-XR, Wyeth) and the improvement of depression was similar for each of the three drugs.