AI Article Synopsis
- Metformin, the most commonly prescribed medication for type 2 diabetes, is associated with gastrointestinal (GI) adverse events that can limit its use in patients.
- A systematic review and meta-analysis of 21 studies aimed to determine the prevalence of these GI adverse events, finding that diarrhea (6.9%) and bloating (6.2%) were the most common issues.
- Extended release (XR) metformin was shown to have lower incidences of GI issues, suggesting it's better tolerated than the immediate release (IR) formulation.
Article Abstract
Introduction: Metformin is the most prescribed medication for type 2 diabetes mellitus (T2DM); there is a well-established link with the elevated incidence of gastrointestinal (GI) adverse events (AE) limiting its administration or intensification.
Objectives: The objective of this systematic review and meta-analysis of observational studies was to evaluate the pooled incidence of GI AE related to metformin use in patients with T2DM.
Materials And Methods: PUB MED/CINAHL/Web of Science/Scopus were searched from database inception until 29.07.2024 for observational studies in English describing the frequency of GI AE in patients with T2DM treated with metformin. Random-effects meta-analyses were used to derive effect sizes: event rates.
Results: From 7019 publications, we identified 211 potentially eligible full-text articles. Ultimately, 21 observational studies were included in the meta-analysis. The prevalence of GI AE was as follows: diarrhea 6.9% (95% CI: 0.038-0.123), bloating 6,2% (95% CI: 0.020-0.177), abdominal pain 5,3% (95% CI: 0.003-0.529), vomiting 2.4% (95%: CI 0.007-0.075), constipation 1.1% (95%: CI 0.001-0.100). The incidence of bloating (coefficient -4.46; p < 0.001), diarrhea (coefficient -1.17; p = 0.0951) abdominal pain (coefficient -2.80; p = 0.001), constipation (coefficient -5.78; p = 0.0014) and vomiting (coefficient -2.47; p < 0.001) were lower for extended release (XR) metformin than metformin immediate release (IR) formulation.
Conclusions: This study highlights the prevalence of GI AE in patients receiving metformin, with a diarrhea predominance, followed by bloating, diarrhea, abdominal pain, constipation, and vomiting. The incidence is lower in patients administered with XR metformin.
Trial Registration: https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42021289975 , identifier CRD42021289975.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11440709 | PMC |
| http://dx.doi.org/10.1186/s12902-024-01727-w | DOI Listing |
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