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Efficacy and Tolerability of Flunarizine for the Treatment of Schizophrenia: Comparison With Haloperidol

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ClinicalTrials.gov Identifier: NCT00740259
Recruitment Status : Completed
First Posted : August 22, 2008
Last Update Posted : August 22, 2008
Information provided by:

August 20, 2008
August 22, 2008
August 22, 2008
September 2004
May 2007   (Final data collection date for primary outcome measure)
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No Changes Posted
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Efficacy and Tolerability of Flunarizine for the Treatment of Schizophrenia: Comparison With Haloperidol
Is Flunarizine a Cheap, Well-Tolerated and Long-Acting Atypical Antipsychotic? A Randomized Double-Blind Flexible-Dose Clinical Trial Versus Haloperidol for the Treatment of Schizophrenia
Flunarizine is a calcium channel blocker traditionally used for the treatment of vertigo and migraine. It also has the mechanism of action associated with antipsychotic activity (D2 receptor blockade), but has never been tested as such. The investigators hypothesis is that flunarizine can be an atypical antipsychotic.
The main advantage of flunarizine over other D2 receptor blockers is its long half-life, so that it may be administered weekly or may delay relapse if medication is interrupted.
Phase 4
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Drug: Flunarizine
For 1 week, 40 mg/day. From week 2 to 3, 20 mg/day. Form week 4 onwards, dosage increment or reduction of 10mg/day was allowed according to efficacy and tolerability.
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Bisol LW, Brunstein MG, Ottoni GL, Ramos FL, Borba DL, Daltio CS, de Oliveira RV, Paz GE, de Souza SE, Bressan RA, Lara DR. Is flunarizine a long-acting oral atypical antipsychotic? A randomized clinical trial versus haloperidol for the treatment of schizophrenia. J Clin Psychiatry. 2008 Oct;69(10):1572-9. Epub 2008 Sep 23.

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
May 2007
May 2007   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  • DSM-IV schizophrenic or schizoaffective patients between 18 and 55 years old with a PANSS score above 45.

Exclusion Criteria:

  • Clinical disease
  • Pregnancy
  • Drug dependence (except for nicotine) in the past month and history of being refractory to at least 2 antipsychotics taken appropriately.
Sexes Eligible for Study: All
18 Years to 60 Years   (Adult)
Contact information is only displayed when the study is recruiting subjects
Flunarizine for schizophrenia
02T-264 (SMRI)
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Diogo Rizzato Lara, Ambulatório de Bipolaridade
Ambulatório de Bipolaridade
Stanley Medical Research Institute
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Ambulatório de Bipolaridade
August 2008

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP