GLP-1 Constipation: Causes, Relief, and Prevention Tips

Constipation is one of the most common GLP-1 side effects. Learn why Ozempic, Wegovy, Mounjaro, and Zepbound cause constipation and how to find relief.

July 25, 2026Healthy-Weight Editorial10 min read

Medically reviewed by Dr. Sarah Chen, MD

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Why do GLP-1 medications cause constipation?

GLP-1 receptor agonists like Ozempic, Wegovy, Mounjaro, and Zepbound slow down digestion. This delayed gastric emptying helps you feel full longer, but it can also slow the movement of food through the intestines, leading to constipation.

Other contributing factors include:

Reduced food intake, especially fiber
Lower fluid intake due to decreased appetite
Less physical activity
Higher doses and dose increases

How common is constipation on GLP-1s?

Constipation is one of the most common side effects of GLP-1 medications. It affects approximately 17% to 25% of patients taking tirzepatide and around 24% of patients taking semaglutide. It is often worse during dose increases and can persist longer than nausea.

Symptoms of GLP-1 constipation

Common signs include:

Fewer than 3 bowel movements per week
Hard, dry stools
Straining during bowel movements
Bloating and abdominal discomfort
Feeling like you cannot fully empty your bowels

How to prevent constipation on GLP-1s

Prevention is easier than treatment. Start these habits early:

Drink at least 8 glasses of water per day
Eat 25 to 35 grams of fiber daily from vegetables, fruits, beans, and whole grains
Walk 20 to 30 minutes daily
Include healthy fats like olive oil and avocado
Eat regular meals, even small ones

Best foods for GLP-1 constipation relief

Fiber-rich foods can help keep bowel movements regular:

Leafy greens like spinach and kale
Vegetables like broccoli, Brussels sprouts, and carrots
Fruits like berries, pears, apples, and prunes
Legumes like lentils, chickpeas, and black beans
Whole grains like oats, quinoa, and brown rice
Chia seeds and flaxseeds

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Over-the-counter remedies for GLP-1 constipation

If lifestyle changes are not enough, these OTC options are commonly used:

Fiber supplements: Psyllium husk, Metamucil, or Benefiber can add bulk to stools.
Osmotic laxatives: Polyethylene glycol (MiraLax) draws water into the intestines.
Magnesium citrate: Helps draw water into the bowel and relax muscles. Use only as directed.
Stool softeners: Docusate sodium can make stools easier to pass.

Always check with your provider before starting new supplements or laxatives, especially if you take other medications.

When to contact your doctor

See your provider if you experience:

No bowel movement for more than 5 to 7 days
Severe abdominal pain or bloating
Blood in the stool
Vomiting with constipation
Unexplained weight loss

Does constipation go away on GLP-1s?

For some people, constipation improves as the body adjusts to the medication. For others, it can persist, especially at higher doses. Most people can manage it successfully with diet, hydration, movement, and occasional OTC support.

Frequently asked questions

How long does GLP-1 constipation last?

It varies. Some people improve within a few weeks. Others need ongoing management, especially at higher doses.

Can I take Metamucil on Ozempic?

Yes, fiber supplements like Metamucil are generally safe and can help prevent constipation on Ozempic and other GLP-1s.

Is MiraLax safe with GLP-1 medications?

MiraLax is commonly recommended for GLP-1 constipation. Ask your provider if it is right for you.

Does tirzepatide cause more constipation than semaglutide?

Some studies suggest tirzepatide may cause slightly more constipation than semaglutide, but both medications can slow digestion.

Should I stop my GLP-1 if constipated?

Not usually. Constipation is manageable. Talk to your provider if it is severe or does not improve with lifestyle changes.

Related guides

GLP-1 Side Effects Complete Guide

Conclusion

Constipation is a common but manageable side effect of GLP-1 medications. Drinking enough water, eating fiber, moving daily, and using gentle OTC remedies when needed can keep things moving. If constipation persists, your provider can adjust your dose or recommend a treatment plan.

If constipation is making GLP-1 treatment difficult, speak with a licensed US telehealth provider to adjust your plan and find relief.

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