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Zuclopenthixol dihydrochloride for schizophrenia.

A Kumar1, D Strech

  • 1Cochrane Schizophrenia Group, Academic Unit of Psychiatry and Behavioural Sciences, 15 Hyde Terrace, Leeds, UK LS2 9LT. ajitkdrmr@yahoo.com

The Cochrane Database of Systematic Reviews
|October 20, 2005
PubMed
Summary

Zuclopenthixol dihydrochloride may improve global state in schizophrenia short-term, but increases movement disorder risk versus placebo. It

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Area of Science:

  • Psychiatry
  • Pharmacology
  • Clinical Trials

Background:

  • Zuclopenthixol dihydrochloride is an oral medication commonly used for schizophrenia management.
  • Schizophrenia is a chronic mental disorder characterized by delusions, hallucinations, and impaired cognitive function.

Purpose of the Study:

  • To evaluate the efficacy and safety of zuclopenthixol dihydrochloride in treating schizophrenia.
  • To compare zuclopenthixol dihydrochloride with placebo, typical antipsychotics, and atypical antipsychotics.

Main Methods:

  • Systematic review of randomized controlled trials (RCTs) from the Cochrane Schizophrenia Group's register (up to December 2004).
  • Inclusion criteria: RCTs comparing zuclopenthixol dihydrochloride with placebo or other antipsychotics for schizophrenia.
  • Data extraction and analysis included relative risks (RR), confidence intervals (CI), and number needed to treat/harm (NNT/NNH).

Main Results:

  • Eighteen trials involving 1578 participants were included.
  • Zuclopenthixol dihydrochloride increased the risk of extrapyramidal symptoms compared to placebo (RR 5.37).
  • Compared to other typical antipsychotics, zuclopenthixol dihydrochloride reduced the risk of being unchanged or worse (RR 0.72) and led to fewer short-term dropouts (RR 0.70).
  • Compared to risperidone, zuclopenthixol dihydrochloride showed no difference in being unchanged or worse but increased antiparkinsonian medication use (RR 1.92).

Conclusions:

  • Zuclopenthixol dihydrochloride may cause movement disorders, potentially more than newer drugs but similar to older antipsychotics.
  • Oral zuclopenthixol dihydrochloride may offer short-term clinical advantages over other older antipsychotics.
  • Further research is needed on functional and relapse outcomes; it remains a viable option for patients indicated for older antipsychotics.

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