“…Although SSRIs are the class of antidepressant prescribed most often for the treatment of anxiety disorders due to their more favorable side-effect profile, virtually all classes of compounds used to treat depression also reduce anxiety, including SSRIs (Antony, 1997;Zohar and Westenberg, 2000;Sheehan and Mao, 2003), tricyclics (Zohar and Westenberg, 2000;Sheehan and Mao, 2003;Kalus et al, 1991;Katon, 1986), monoamine oxidase inhibitors (MAOIs) (Katon, 1986;Jann and Kurtz, 1987), 'new generation' mixed norepinephrine and serotonin reuptake inhibitors (Sheehan and Mao, 2003;Papp et al, 1998;Pollack et al, 1996), and atypical antidepressants including bupropion Rush et al, 2001) and trazodone (Mavissakalian et al, 1987). Therefore, studies investigating the mechanism of the antidepressant response may shed light onto the neurobiology of anxiety and/or depression.…”