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Costs and Benefits of Two Doses of Fluphenazine

Stephen R. Marder, MD; Theodore Van Putten, MD; Jim Mintz, PhD; Joanne McKenzie, RN; Malca Lebell, PhD; Gary Faltico, PhD; Philip R.A. May, MD
Arch Gen Psychiatry. 1984;41(11):1025-1029. doi:10.1001/archpsyc.1983.01790220015002.
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• The relative costs and benefits of low- and conventionaldose neuroleptic maintenance therapy were evaluated in a double-blind comparison of 5 and 25 mg of fluphenazine decanoate administered every two weeks. Subjects were 50 patients fulfilling DSM-III criteria for schizophrenic disorder who had been successfully maintained with 25 mg or less of fluphenazine decanoate. A one-year survival analysis disclosed that there were no statistically significant differences between the two doses insofar as preventing relapse. Patients receiving the higher dose appeared to feel more uncomfortable, as indicated by higher scores on subscales of the Hopkins Symptom Checklist-90. In addition, patients receiving the higher dose had higher side-effect scores. These findings suggest that a substantial proportion of patients who are presently maintained with 25 mg or less of fluphenazine decanoate every two weeks will do just as well with as little as 5 mg.

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