A Double-Blind Controlled Trial of ‘Vivalan’ (Viloxazine Hydrochloride) and Imipramine Hydrochloride in the Treatment of Depression in General Practice

Abstract

One hundred and twenty-three patients with mild to moderate depressive illness were entered into a double-blind between-patient study of viloxazine hydrochloride (150 mg/day, expressed as base) and imipramine hydrochloride (75 mg/day, expressed as salt) by nine general practitioners. Sixty-two took viloxazine and sixty-one took imipramine. Both drugs produced a statistically highly significant improvement in both the depressive and anxiety symptoms over the period of the study, an effect being seen as early as the seventh day of treatment. Viloxazine produced fewer side-effects than imipramine, in particular significantly less drowsiness and dry mouth. The only side-effect seen with viloxazine was an upper gastro-intestinal disturbance with nausea and occasional vomiting, but this was transient. It is concluded that viloxazine hydrochloride is an effective anti-depressant in mild to moderate cases of depression in general practice and has the advantage of fewer side-effects than imipramine. The absence of sedation with viloxazine is of particular value in the treatment of ambulant patients.