Relative speed of onset of the antidepressant effect of maprotiline.

In a double-blind clinical trial conducted in general practice, maprotiline was compared with amitriptyline. Thirty-three of 40 patients completed the trial, 19 on maprotiline and 14 on amitriptyline. The Hamilton Depression Rating Scale was administered on days, 0, 7, 14, and 21, and a global rating scale of improvement was administered on day 21. Although there were significant reductions in the Hamilton scores by day 21 in both groups, with no significant difference between the compounds, maprotiline produced significantly greater improvement by day 7 than did amitriptyline. A review of published double-blind clinical amitriptyline or imipramine for treatment of depression supports our finding that maprotiline has a faster onset of action than the standard tricyclic antidepressants.