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Drug Safety

, Volume 25, Issue 15, pp 1107–1116 | Cite as

Glucose Intolerance with Atypical Antipsychotics

  • Karin Hedenmalm
  • Staffan Hägg
  • Malin Ståhl
  • Örjan Mortimer
  • Olav Spigset
Original Research Article

Abstract

Background: Previous studies have suggested that the atypical antipsychotics clozapine and olanzapine may be associated with an increased risk of glucose intolerance and diabetes mellitus. Early studies have also suggested an association between use of conventional antipsychotics and the development of glucose intolerance.

Objective: To examine quantitatively the association between glucose intolerance including diabetes mellitus and the use of the atypical antipsychotics clozapine, olanzapine or risperidone, and to identify possible risk factors for the development of glucose intolerance during treatment with these drugs.

Methods: All reports suggestive of glucose intolerance for clozapine, olanzapine and risperidone were identified in the WHO database for adverse drug reactions. In the analyses of possible risk factors for glucose intolerance all other reports of adverse drug reactions for clozapine, olanzapine and risperidone were used as reference. Using the Bayesian Confidence Propagation Neural Network method, the strengths of the associations over time between glucose intolerance and the use of these drugs were analysed. For comparison, the strengths of the associations between glucose intolerance and the use of the conventional antipsychotics haloperidol and chlorpromazine were also analysed.

Results: Clozapine, olanzapine and risperidone were significantly associated with glucose intolerance. In contrast, chlorpromazine and haloperidol were not associated with glucose intolerance. For clozapine, olanzapine and risperidone grouped together, the following potential risk factors for glucose intolerance were identified: an underlying diabetic condition (odds ratio [OR] 10.22, 95% CI 8.20–12.73), an increase in weight (OR 2.36, 95% CI 1.76–3.17), male gender (OR 1.27, 95% CI 1.11–1.47), and concomitant use of valproic acid (OR 1.97, 95% CI 1.61–2.40), selective serotonin reuptake inhibitors (OR 1.63, 95% CI 1.33–1.99) or buspirone (OR 2.24, 95% CI 1.33–3.77).

Conclusion: Treatment with clozapine, olanzapine or risperidone appears to be associated with an increased risk of glucose intolerance.

Keywords

Clozapine Risperidone Olanzapine Adverse Drug Reaction Valproic Acid 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

The authors have no financial or other conflicts of interest that are directly relevant to the contents of the manuscript.

The authors are indebted to the national centres mentioned in this study, who contributed data. The opinions and conclusions, however, are not necessarily those of the various centres nor of the WHO.

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Copyright information

© Adis International Limited 2002

Authors and Affiliations

  • Karin Hedenmalm
    • 1
  • Staffan Hägg
    • 2
  • Malin Ståhl
    • 3
  • Örjan Mortimer
    • 1
  • Olav Spigset
    • 4
  1. 1.Drug Epidemiology Unit, Medical Products AgencyUppsalaSweden
  2. 2.Division of Clinical PharmacologyNorrland University HospitalUmeåSweden
  3. 3.WHO Uppsala Monitoring CentreUppsalaSweden
  4. 4.Department of Clinical PharmacologySt Olav’s University HospitalTrondheimNorway

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