Zimelidine and amitriptyline in the treatment of depressive illness in general practice

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Abstract
Depressive patients seen at hospital clinics are likely to be unrepresentative in terms of treatment response. In this study patients were always seen at their general practitioners' surgeries for assessment by specialists after selection as being in need of antidepressant treatment. The Research Diagnostic Criteria for major or minor depressive illness and a Hamilton Depression (Ham-D) score of at least 10 were required for inclusion, using the Present State Examination as a basis for interview. Patients were seen at weekly intervals, alternatively by practitioner and assessor for further Ham-D ratings, completion of the Kellner Sheffield Self-Rating test (KSSRT), event record and side effect checklist. Patients were randomly and blindly allocated to either zimelidine or amitriptyline dispensed identically at dosages of 100 mg and 75 mg at night, rising to 200 mg and 150 mg after two weeks. At four weeks there was no significant difference between the improvement found with zimelidine and amitriptyline or either the Ham-D or the KSSRT. Amitriptyline patients tended to gain and zimelidine patients to lose weight; difference significant. Other amitriptyline side effects were not found in those taking zimelidine, the latter tending to suffer diarrhoea. Preliminary analysis shows no relationship between clinical response and plasma level of either compound.

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