Ozempic Constipation: The Complete Doctor's Guide to Prevention and Relief
Ozempic Constipation: The Complete Doctor's Guide to Prevention and Relief
By Dr. Onikepe Adegbola, MD PhD — Johns Hopkins-trained physician-scientist
Constipation affects 20-30% of semaglutide users and is the #2 most common side effect after nausea. GLP-1 medications slow gastric emptying by 30-50% — great for appetite control, terrible for bowel regularity. Most patients can manage this with the right protocol.
Key Takeaways
- GLP-1 slows the ENTIRE GI tract — not just the stomach. Colonic transit time increases 40%.
- Constipation typically worsens with dose increases — worst at weeks 4-8 of each new dose
- Dehydration is the #1 modifiable factor — reduced eating = reduced water intake = harder stools
- Most OTC solutions are safe to use with GLP-1 medications
- GLP-1 Digestive Enzyme Companion + psyllium fiber = first-line combination
The 5-Step Protocol
Step 1: Hydration (Non-Negotiable)
Minimum 80 oz (2.4L) water daily. Track with a marked water bottle. Add lemon or cucumber for flavor if needed.
Step 2: Fiber
Psyllium husk — start with 1 tsp daily in 8 oz water, increase to 2 tsp. Take with extra water. This is the most gentle, effective fiber for GLP-1 constipation.
Step 3: Movement
20-30 minute walk daily — especially after meals. Movement stimulates the gastrocolic reflex.
Step 4: Digestive Support
GLP-1 enzymes with every meal + daily probiotic (B. lactis strains specifically help transit time)
Step 5: If Needed — OTC Options
- Magnesium citrate: 200-400mg at bedtime (osmotic effect)
- Miralax (PEG 3350): 17g daily in water (safe for long-term use)
- Docusate (Colace): Stool softener, gentle, can use daily
- Avoid: Stimulant laxatives (senna, bisacodyl) long-term — causes dependency
See our full constipation protocol and Zepbound bloating guide.
If no bowel movement for 3+ days, or experiencing severe abdominal pain, contact your provider. This article is educational only.
