After thousands of clinical trials, the efficacy of psychotropic drugs in the treatment of psychiatric disorders has become well established. However, the very success of these drugs has meant that many patients with chronic illnesses will receive them for a significant part of their lifetime. Side effects and other adverse reactions are an unfortunate but unavoidable component of successful pharmacotherapy. In deed, the main emphasis in new drug development is often on the search for compounds that have fewer side effects, although no one has as yet found an effective drug without them....