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Safety7 min readApril 7, 2026
Wegovy Diarrhea: Managing This Common Side Effect
Why Wegovy causes diarrhea and what you can do about it. Prevention strategies and when to contact your doctor.
By Med Consumer Watch Team
Diarrhea affects about 30% of Wegovy users at some point during treatment. Here's why it happens and how to manage it.
Why Wegovy Causes GI Issues
Semaglutide affects digestion:
• Slows gastric emptying - Changes in gut motility can cause diarrhea or constipation
• Affects bile release - May contribute to loose stools
• Dietary changes - Eating less or differently affects bowel function
• Initial adjustment - Body needs time to adapt to medication
Typical Patterns
When diarrhea usually occurs:
• Most common early in treatment
• Often happens during dose increases
• Usually improves after weeks at stable dose
• May alternate with constipation
GI side effects typically peak early and improve over time. Patience helps.
Management Tips
Reduce diarrhea with:
- Adequate hydration - Replace lost fluids
- Smaller, more frequent meals
- Avoid greasy, fatty foods
- Limit caffeine and alcohol
- Probiotics may help
- Bland diet during flare-ups
When to Get Help
Contact your provider if:
• Diarrhea is severe or persistent
• You can't stay hydrated
• Blood in stool
• Fever accompanies symptoms
• Symptoms significantly impact daily life
Dehydration from persistent diarrhea can be dangerous. Don't hesitate to seek help.
The Bottom Line
Wegovy-related diarrhea is common but usually manageable and often improves with time. Stay hydrated, adjust your diet, and work with your provider if symptoms are severe or persistent.
Sources & References
- FDA - Wegovy Prescribing Information
Medical Disclaimer
This article is for informational purposes only and is not intended as medical advice. Always consult with a qualified healthcare provider before making decisions about your health or medications. Individual experiences may vary.
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