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Pharmacopsychiatry ; 42(3): 114-21, 2009 May.
Article in English | MEDLINE | ID: mdl-19452380

ABSTRACT

INTRODUCTION: This study evaluated the safety/tolerability and effectiveness of aripiprazole titrated-dose versus fixed-dose switching strategies from risperidone in patients with schizophrenia experiencing insufficient efficacy and/or safety/tolerability issues. METHODS: Patients were randomized to an aripiprazole titrated-dose (starting dose 5 mg/day) or fixed-dose (dose 15 mg/day) switching strategy with risperidone down-tapering. Primary endpoint was rate of discontinuation due to adverse events (AEs) during the 12-week study. Secondary endpoints included positive and negative syndrome scale (PANSS), clinical global impressions - improvement of illness scale (CGI-I), preference of medication (POM), subjective well-being under neuroleptics (SWN-K) and GEOPTE (Grupo Español para la Optimización del Tratamiento de la Esquizofrenia) scales. RESULTS: Rates of discontinuations due to AEs were similar between titrated-dose and fixed-dose strategies (3.5% vs. 5.0%; p=0.448). Improvements in mean PANSS total scores were similar between aripiprazole titrated-dose and fixed-dose strategies (-14.8 vs. -17.2; LOCF), as were mean CGI-I scores (2.9 vs. 2.8; p=0.425; LOCF) and SWN-K scores (+8.6 vs.+10.3; OC,+7.8 vs.+9.8; LOCF). CONCLUSION: Switching can be effectively and safely achieved through a titrated-dose or fixed-dose switching strategy for aripiprazole, with down-titration of risperidone.


Subject(s)
Antipsychotic Agents/administration & dosage , Antipsychotic Agents/adverse effects , Piperazines/administration & dosage , Piperazines/adverse effects , Quinolones/administration & dosage , Quinolones/adverse effects , Risperidone/adverse effects , Schizophrenia/drug therapy , Adult , Aripiprazole , Cognition , Female , Health Status , Humans , Male , Middle Aged , Outpatients , Patient Satisfaction , Prolactin/blood , Quality of Life , Risperidone/administration & dosage , Sexuality , Treatment Outcome
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