A controlled comparative trial of a new antidepressant, ciclazindol

The author describes a controlled, double-blind, comparative trial of a new tetracyclic compound, ciclazindol (WY 23409), against amitriptyline in the treatment of thirty-five patients admitted to hospital with depressive illness. Each patient was randomly allocated to three weeks treatment with either 50 mg b.d. ciclazindol or 50 mg b.d. amitriptyline. In the event of a poor response the dose level was raised to 75 mg b.d. Separation of cases of endogenous depression and severity of depression were assessed by the Levine-Pilowsky Depression Questionnaire, a self-rating technique. Severity of depression was also assessed using the Hamilton Rating Scale. No significant difference was noted between the drugs in either the degree or the rate of response nor when the endogenous cases alone were studied. The interesting observation was made that only one-third of ciclazindol patients gained weight compared to almost three-quarters of the amitriptyline group and the mean weight gain of the latter was over double that of the ciclazindol group. The author concludes that ciclazindol offers promise and merits further study using higher dosage levels once its full safety trials have been completed.