A double-blind comparison of sertraline and clomipramine in the treatment of major depressive disorder and associated anxiety in general practice

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Abstract
In this double-blind study in primary care patients, the efficacy and safety of sertraline, an antidepressant which is a selective inhibitor of serotonin re-uptake, was compared with clomipramine. Patients with DSM-III-defined major depression and with significant anxiety randomly received 50-150 mg of either sertraline (N=51) or clomipramine (N=55) once daily for 6 weeks. The mean final daily dose was 63.5 mg sertraline and 60.6 mg clomipramine. Seventy five percent of sertraline-treated and 79% of clomipramine-treated patients were maintained on the lowest dose of 50 mg once daily. The mean scores of all the rating scales (HAM-D, HAM-A, HAD, CGI) showed similar efficacy between the treatments in reducing the symptoms of depression and anxiety. Clomipramine was less well tolerated than sertraline with a greater overall incidence of side effects, or significantly greater incidence of anticholinergic side effects and significantly more patient withdrawals due to side effects; 18% in the clomipramine group compared with 4% in the sertraline group. The results indicate that sertraline is an effective agent to use in primary care patients with depression and associated symptoms of anxiety and is better tolerated than the tricyclic comparator clomipramine.