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Antipsychotic Polypharmacy in Schizophrenia

NCT00493233 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 100

Last updated 2009-05-19

No results posted yet for this study

Summary

The literature suggests that when a patient is prescribed more than one antipsychotic for at least 30 days, he or she is likely to continue on that combination. In this 12 week study 100 adult patients being treated on more than one antipsychotic medication for at least 30 days will be recruited. In order to control for the natural course of the illness, patients will be randomly assigned to one of two groups: the first group will continue the second medication hidden in a capsule at the same dose, while the second group will be given an inactive capsule (placebo) - the capsules in both group will be identical such that neither the patient nor the treating doctor will be able to identify the group assignment.

Conditions

Interventions

DRUG

2 antipsychotic medications (combinations of olanzapine, risperidone, clozapine, seroquel, haldol, perphenazine)

Primary antipsychotic medication (olanzapine, oral risperidone, seroquel, clozapine, haldol, perphenazine) will be determined by the treating physician and participants will continue taking the concomitant antipsychotic drug. The dose of the main antipsychotic drug will remain open and flexible at the discretion of the attending physician. The dose of the "second" antipsychotic drug will remain fixed throughout the study period.

DRUG

main antipsychotic medication and placebo

The "main" antipsychotic drug will be determined by the treating physician. Participants will be allocated to placebo in place of the concomitant antipsychotic drug. The dose of the "main" antipsychotic drug will remain open and flexible at the discretion of the attending physician.

Sponsors & Collaborators

  • Canadian Psychiatric Research Foundation

    collaborator OTHER

  • Centre for Addiction and Mental Health

    lead OTHER

Principal Investigators

  • David Mamo, MD, MSc · Centre for Addiction and Mental Health

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
80 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2006-11-30
Primary Completion
2008-12-31

Countries

  • Canada

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT00493233 on ClinicalTrials.gov