JOURNAL ARTICLE
MULTICENTER STUDY
RANDOMIZED CONTROLLED TRIAL
RESEARCH SUPPORT, NON-U.S. GOV'T
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The efficacy and safety of lower doses of aripiprazole for the treatment of patients with acute exacerbation of schizophrenia.

CNS Spectrums 2006 September
INTRODUCTION: Efficacy and safety of aripiprazole administered at doses lower than those previously studied systematically were investigated in patients with acute exacerbation of schizophrenia.

METHODS: In this double-blind, multicenter study, 367 patients requiring inpatient hospitalization for acute relapse of schizophrenia were randomized to one of three fixed doses of aripiprazole (2, 5, or 10 mg/day) or placebo for 6 weeks. Efficacy and safety parameters were assessed weekly. Primary outcome measure was mean change from baseline in Positive and Negative Syndrome Scale (PANSS) Total score at endpoint.

RESULTS: Aripiprazole 10 mg/day produced statistically significantly greater improvements from baseline compared with placebo for PANSS Total at endpoint (-11.3 vs -5.3; P=.03) and at weeks 2-5. Aripiprazole 5 mg/day did not produce significantly greater improvement in PANSS Total compared with placebo at endpoint, although significant differences were seen at weeks 3-5. No statistically significant improvements compared with placebo were achieved with aripiprazole 2 mg/day at any time points. All aripiprazole doses were well tolerated. Aripiprazole was not associated with significant extrapyramidal symptoms.

CONCLUSION: While aripiprazole 5 mg/day warrants further study, the 10 mg/day dose provides effective and well-tolerated therapy for management of acute psychosis in patients with schizophrenia.

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