Glucose Intolerance with Atypical Antipsychotics
- Karin HedenmalmAffiliated withDrug Epidemiology Unit, Medical Products Agency Email author
- , Staffan HäggAffiliated withDivision of Clinical Pharmacology, Norrland University Hospital
- , Malin StåhlAffiliated withWHO Uppsala Monitoring Centre
- , Örjan MortimerAffiliated withDrug Epidemiology Unit, Medical Products Agency
- , Olav SpigsetAffiliated withDepartment of Clinical Pharmacology, St Olav’s University Hospital
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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.
- Glucose Intolerance with Atypical Antipsychotics
Volume 25, Issue 15 , pp 1107-1116
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- 1. Drug Epidemiology Unit, Medical Products Agency, Box 26, Uppsala, S-751 03, Sweden
- 2. Division of Clinical Pharmacology, Norrland University Hospital, Umeå, Sweden
- 3. WHO Uppsala Monitoring Centre, Uppsala, Sweden
- 4. Department of Clinical Pharmacology, St Olav’s University Hospital, Trondheim, Norway