> In both research and clinical contexts, an important challenge is presented by the phenomenological overlap between side effects and residual symptoms of depression. Thus, fatigue, cognitive impairment, apathy, jitteriness and irritability, and sleep and appetite changes are core features of depression, but may also be related to antidepressant, treatment. In a small study of 43 depressed inpatients,6 which investigated the rate of somatic symptoms and complaints that were present before and after treatment, many symptoms often considered to be side effects of drugs were also present prior to treatment, including dry mouth, lightheadedness, sweating, tremors, and constipation. The distinction between residual symptoms and side effects is crucial, as they call for very different responses.