These data provide evidence for the antidepressant efficacy of paroxet
ine. Paroxetine- and imipramine-treated patients were significantly di
fferent from placebo-treated patients, but little different to each ot
her, on all depressive outcome measures. However, paroxetine appeared
to have a possibly greater and earlier beneficial effect on anxiety sy
mptoms associated with depression, when compared with imipramine. Both
active therapies were effective in treating patients with severe depr
ession. Side effects for paroxetine were typical of other serotonin (5
-HT) uptake inhibitors but different from those of imipramine. In part
icular, anticholinergic and cardiovascular symptoms were reduced, and
premature withdrawal less likely.