Hormonal
GLP-1 and dual GLP-1/GIP receptor agonists cause predictable, dose-dependent gastrointestinal adverse events (nausea, vomiting, diarrhea, constipation) that are generally mild to moderate and transient, though they significantly impact treatment adherence.
Expect digestive side effects like nausea or constipation when starting GLP-1 medications. These are common, usually mild, and tend to improve as your body adjusts. To minimize them, start with the lowest dose and increase slowly as directed by your doctor. Staying hydrated and eating smaller meals can help manage symptoms.
Nausea, vomiting, diarrhea, and constipation were the most frequently reported GI adverse events, generally dose-dependent and transient... GLP-1–based therapies are associated with predictable GI adverse effects, most of which are mild to moderate and manageable.
Why this rating
Based on a comprehensive narrative review of RCTs, meta-analyses, and real-world data, though heterogeneity exists.
Source
Gastrointestinal Adverse Effects of GLP-1 and Dual GLP-1/GIP Receptor Agonists: A Comprehensive Update in Diabetic and Obese Populations
Nimet Yılmaz et al. · Diabetes Metabolic Syndrome and Obesity · 2026
DOI 10.2147/dmso.s584175
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