Cited by 72Pharmacology and Obesity TreatmentSchizophrenia research and treatmentEating Disorders and Behaviors

Metformin for weight reduction in non-diabetic patients on antipsychotic drugs: a systematic review and meta-analysis

Björkhem-Bergman, Linda, Asplund, Annika B, Lindh, Jonatan D·2011·Journal of Psychopharmacology

Abstract

Weight gain is a clinically important side effect of antipsychotic drug therapy. The aim of this study was to determine the effect of the antidiabetic drug metformin on antipsychotic-induced weight gain in non-diabetic patients. In a systematic literature review we identified 195 citations from which seven randomized, placebo-controlled studies (398 patients) were included in the final analysis. Studies in adults ( n = 5) and in children ( n = 2) were analysed separately. Compared with placebo, metformin treatment caused a significant body weight reduction in adult non-diabetic patients treated with atypical antipsychotics (4.8%, 95% CI 1.6 to 8.0) and in children (4.1%, 95% CI 2.2 to 6.0). There was evidence of substantial heterogeneity among studies, and when the analysis was restricted to patients with a manifest (>10%) body weight increase prior to randomisation metformin reduced weight by 7.5% (95% CI 2.9 to 12.0). The effect was larger in Asians (7.8%, 95% CI 4.4 to 11.2) than in Hispanics (2.0%, 95% CI 0.7 to 3.3). In conclusion, metformin has a pronounced weight-reducing effect in antipsychotic-treated patients, especially in those with a manifest weight gain. Although direct comparisons are lacking, the observed effect on body weight compares favourably with the effect of sibutramine and orlistat, approved for weight reduction. However, metformin is not approved for use in non-diabetic patients and it is still not generally advisable to recommend metformin to counteract antipsychotic-induced weight gain.

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Crossref · 10.1177/0269881109353461

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Authors
Björkhem-Bergman, L., Asplund, A. B., & Lindh, J. D.
Affiliations
  • Division of Clinical Pharmacology, Karolinska University Hospital, Huddinge, Karolinska Institutet, 141 86, Stockholm, Sweden.
  • Karolinska University Hospital (SE)
Corresponding author
Lindh, Jonatan D
Venue
Journal of Psychopharmacology
Published
2010-01-15
Volume
25
Issue
3
Pages
299-305
ISSN
  • 0269-8811 (ISSN-L)
  • 1461-7285
OpenAlex
W2036358842
Cited by
72
References
28
Citations by year
2025: 2 · 2024: 4 · 2023: 1 · 2022: 5 · 2021: 4 · 2020: 5 · 2019: 8 · 2018: 4 · 2017: 3 · 2016: 6 · 2015: 10 · 2014: 4 · 2013: 5 · 2012: 5
FWCI
0.58
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Psychopharmacology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Karolinska Institutet
  • Stockholms Läns Landsting
Topics
  • Health Sciences › Medicine › Pharmacology › Pharmacology and Obesity Treatment
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Social Sciences › Psychology › Clinical Psychology › Eating Disorders and Behaviors
Keywords
metformin, antipsychotic-induced weight gain, atypical antipsychotics, weight loss, non-diabetic patients, body weight, children, ethnic differences, sibutramine, orlistat
MeSH terms
Adult, Child, Humans, Hypoglycemic Agents, Metformin, Antipsychotic Agents, Weight Gain, Weight Loss, Racial Groups

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