GLP-1 Constipation: Causes, Prevention, and Relief

Key Takeaways

• Constipation is a common gastrointestinal side effect of GLP-1 medications, including Ozempic®, Wegovy®, Mounjaro®, and Zepbound®.
• GLP-1 medications slow digestion and may reduce food, fibre, and fluid intake, contributing to constipation.
• Eating more fibre-rich foods, drinking enough water, and staying physically active may help support regular bowel movements.
• Fibre supplements such as psyllium husk or partially hydrolysed guar gum (PHGG) may be helpful when dietary fibre intake is insufficient.
• Seek medical advice if constipation is severe, persistent, or accompanied by symptoms such as severe abdominal pain, vomiting, blood in the stool, or an inability to pass gas.
  
  

Constipation is one of the most common gastrointestinal side effects of GLP-1 medications such as Ozempic® (semaglutide), Wegovy® (semaglutide), Mounjaro® (tirzepatide), and Zepbound® (tirzepatide). While not everyone experiences constipation, simple dietary and lifestyle changes can often help support healthy bowel function.

GLP-1 medications slow stomach emptying and reduce appetite, helping support blood sugar management and weight loss. These same effects may also reduce food, fibre, and fluid intake, contributing to constipation.

In this guide, you'll learn:

• Common symptoms of GLP-1 constipation

• How to help prevent constipation

• Foods that may support regular bowel movements

• Practical ways to relieve constipation

• Whether fibre supplements may be appropriate

• When to seek medical advice

Why Can GLP-1 Medications Cause Constipation?

GLP-1 medications affect digestion in several ways that may contribute to constipation. While slower stomach emptying plays an important role, other changes in eating habits and digestive function can also affect bowel regularity.

Several factors may contribute to constipation while taking GLP-1 medications, including:

• delayed gastric emptying

• reduced appetite

• lower food intake

• reduced fibre intake

• inadequate fluid intake

• changes in digestive motility
  
  

Because appetite often decreases during treatment, many people unintentionally eat and drink less than usual. Lower fibre and fluid intake can make stools harder to pass, while reduced food intake may slow normal bowel movements.

Whether you're experiencing Ozempic® constipation, Wegovy® constipation, Mounjaro® constipation, or Zepbound® constipation, the same healthy lifestyle principles generally apply. Gradually increasing fibre intake, drinking enough water, staying physically active, and following a balanced eating pattern may help support healthy bowel function. If symptoms become severe or persistent, speak with your healthcare provider.

Common Symptoms of GLP-1 Constipation

Constipation affects people differently. Some may notice only mild changes in bowel habits, while others experience symptoms that interfere with their daily routine.

Common symptoms include:

• fewer bowel movements than usual

• hard, dry, or lumpy stools

• straining during bowel movements

• bloating

• abdominal discomfort

• excessive gas

• a feeling of incomplete emptying

• reduced appetite caused by feeling overly full
  
  

Symptoms often develop during the first few weeks of treatment or after a dose increase. For many people, digestive symptoms gradually improve as the body adjusts to the medication.

Seek prompt medical attention if constipation is accompanied by severe abdominal pain, persistent vomiting, blood in the stool, or an inability to pass gas, as these symptoms may indicate a more serious medical condition.

Foods That May Help Relieve GLP-1 Constipation

Diet plays an important role in supporting healthy digestion while taking GLP-1 medications. Because these medications may reduce appetite, it's easy to consume less fibre and fewer fluids than your body needs to maintain regular bowel movements.

Choosing a variety of fibre-rich foods and staying well hydrated may help support bowel regularity and overall digestive health.

Fruits Rich in Fibre

Many fruits naturally contain fibre and water, making them a good choice for supporting healthy bowel function.

Examples include:

• berries

• pears

• apples with the skin

• kiwi fruit

• oranges

• prunes
  
  

Prunes are particularly well known for supporting regular bowel movements because they contain both fibre and naturally occurring sorbitol, which may help soften stools.

Vegetables

Vegetables provide fibre, water, and essential nutrients that support digestive health.

Aim to include a variety of vegetables throughout the day, such as:

• broccoli

• spinach

• kale

• carrots

• Brussels sprouts

• green beans
  
  

If raw vegetables worsen digestive discomfort, lightly cooking them may make them easier to tolerate while still providing valuable fibre.

Whole Grains

Replacing refined grains with whole grains can help increase your daily fibre intake.

Good options include:

• oats

• brown rice

• quinoa

• wholemeal bread

• wholegrain breakfast cereals
  
  

Introduce higher-fibre foods gradually to give your digestive system time to adjust.

Legumes, Nuts, and Seeds

Beans, lentils, chickpeas, nuts, and seeds provide both fibre and plant-based nutrients that support overall digestive health.

Consider adding:

• lentils

• chickpeas

• black beans

• chia seeds

• flaxseeds

• almonds
  
  

Chia seeds and flaxseeds can be mixed into yoghurt, porridge, or smoothies to increase fibre intake without significantly increasing meal size.

Don't Forget Fluids

Fibre works best when combined with adequate hydration. Drinking enough water throughout the day helps stools remain softer and easier to pass.

If you're increasing your fibre intake, increasing your fluid intake is equally important.

Foods That May Make Constipation Worse

No single food causes constipation on its own, but certain dietary patterns may make symptoms worse, particularly if they replace fibre-rich foods.

You may benefit from limiting:

• highly processed foods

• refined grains such as white bread and pastries

• frequent fast food meals

• low-fibre snack foods

• sugary drinks instead of water

• excessive amounts of ultra-processed convenience foods
  
  

Rather than avoiding specific foods completely, focus on building balanced meals that include vegetables, fruit, whole grains, legumes, and adequate fluids. Small, sustainable dietary changes are often more effective than restrictive eating patterns.

How to Help Relieve GLP-1 Constipation

In addition to making healthy food choices, several simple lifestyle habits may help improve bowel regularity while taking GLP-1 medications.

Increase Fibre Gradually

Fibre supports healthy bowel movements, but increasing your intake too quickly may lead to bloating, gas, or abdominal discomfort.

Aim to increase your fibre intake gradually over several weeks rather than making sudden changes.

Stay Well Hydrated

Adequate hydration is essential for healthy digestion. Water helps fibre work effectively by softening stools and supporting normal bowel function.

Stay Physically Active

Regular physical activity helps encourage healthy digestive motility. Even moderate exercise, such as walking, cycling, or gentle stretching, may support more regular bowel movements.

Don't Ignore the Urge

When you feel the urge to have a bowel movement, try not to delay it. Establishing a regular bathroom routine may help encourage healthy bowel habits over time.

Can Fibre Supplements Help?

For many people, meeting daily fibre needs through whole foods is the best approach to supporting healthy digestion. However, because GLP-1 medications often reduce appetite, some people may find it difficult to consume enough fibre through diet alone.

In these situations, a fibre supplement may help support regular bowel movements when used alongside adequate fluid intake and a balanced diet.

It's important to remember that fibre supplements are not a substitute for a healthy eating pattern. Instead, they can help fill nutritional gaps when dietary fibre intake is consistently low.

Psyllium Husk

Psyllium is one of the most widely studied fibre supplements for supporting bowel regularity. It is a soluble fibre that absorbs water to form a soft gel, helping stools become softer and easier to pass.

When taking psyllium, it's important to drink plenty of water. Without adequate fluid intake, symptoms may worsen rather than improve.

Partially Hydrolysed Guar Gum (PHGG)

PHGG is a gentle, soluble fibre that dissolves completely in water and is generally well tolerated.

Compared with some other fibre supplements, PHGG may be less likely to cause bloating or excess gas, making it a suitable option for people with sensitive digestion.

Inulin

Inulin is a prebiotic fibre that helps nourish beneficial gut bacteria and supports overall gut health.

Although many people tolerate inulin well, introducing it too quickly may increase gas or bloating. Starting with a small amount and increasing gradually may improve tolerance.

How Much Fibre Do Adults Need?

Most adults do not consume enough fibre to meet recommended daily intake.

While individual requirements vary, many health organisations recommend approximately:

• Women: around 25 g of fibre per day

• Men: around 30 to 38 g of fibre per day
  
  

Rather than aiming to reach these amounts overnight, gradually increasing your fibre intake is often the most comfortable and sustainable approach.

Food First, Supplements Second

Whenever possible, prioritise fibre-rich foods such as vegetables, fruit, legumes, whole grains, nuts, and seeds. These foods provide fibre alongside vitamins, minerals, antioxidants, and other beneficial nutrients that supplements alone cannot replace.

If you decide to use a fibre supplement, start with a low dose, increase it gradually, and drink enough water throughout the day. If constipation continues despite these measures, speak with your healthcare provider to determine the most appropriate management plan.

When Should You Speak with a Healthcare Provider?

Although mild constipation often improves with dietary and lifestyle changes, some symptoms require medical assessment.

Speak with your healthcare provider if you:

• haven't had a bowel movement for several days despite increasing fibre, fluids, and physical activity

• experience severe or worsening abdominal pain

• have persistent nausea or vomiting

• notice blood in your stool or black, tarry stools

• are unable to pass gas

• develop a swollen or firm abdomen

• experience constipation that continues to worsen instead of improving
  
  

Your healthcare provider can determine whether your symptoms are related to your GLP-1 medication, another medical condition, or another contributing factor. They may recommend dietary changes, review your medications, or discuss appropriate treatment options.

Do not stop taking Ozempic®, Wegovy®, Mounjaro®, Zepbound®, or any other prescribed GLP-1 medication without first consulting your healthcare provider. In many cases, constipation can be managed without interrupting treatment.

Frequently Asked Questions

Is constipation a common side effect of GLP-1 medications?

Yes. Constipation is a recognised gastrointestinal side effect of GLP-1 medications, although not everyone experiences it. Symptoms are often mild to moderate and may improve as your body adjusts to treatment.

Can Ozempic® cause constipation?

Yes. Ozempic® (semaglutide) may slow stomach emptying, which can contribute to constipation in some people. Staying hydrated, eating enough fibre, and remaining physically active may help support healthy bowel function.

Can Wegovy® cause constipation?

Yes. Wegovy® contains the same active ingredient as Ozempic® and may also contribute to constipation. Individual experiences vary, and symptoms often improve as treatment continues.

Can Mounjaro® cause constipation?

Constipation has been reported by some people taking Mounjaro® (tirzepatide). Healthy lifestyle habits, including adequate hydration, gradual increases in fibre intake, and regular physical activity, may help reduce symptoms.

Can Zepbound® cause constipation?

Yes. Because Zepbound® also contains tirzepatide, constipation is a possible gastrointestinal side effect. If symptoms become severe or don't improve with self-care, consult your healthcare provider.

How long does GLP-1 constipation last?

The duration varies from person to person. Some people notice improvement within the first few weeks as their digestive system adapts, while others may need ongoing dietary and lifestyle strategies to help manage constipation.

What foods help relieve constipation while taking GLP-1 medications?

Foods naturally rich in fibre may help support regular bowel movements. Good choices include vegetables, fruit, legumes, oats, whole grains, chia seeds, and flaxseeds. Drinking enough water is equally important, especially when increasing fibre intake.

Can I take a fibre supplement with GLP-1 medications?

For some people, a fibre supplement may help if dietary fibre intake is consistently low. Psyllium husk and partially hydrolysed guar gum (PHGG) are commonly used options. If you're unsure which supplement is appropriate, speak with your healthcare provider.

Should I stop taking my GLP-1 medication if I'm constipated?

No. Do not stop taking your prescribed medication without discussing it with your healthcare provider. In many cases, constipation can be managed through dietary changes, hydration, physical activity, and other supportive measures while continuing treatment.

Can magnesium help with constipation?

Some forms of magnesium are used under medical guidance to relieve occasional constipation. However, highly absorbable forms such as magnesium bisglycinate are generally chosen to support magnesium intake rather than for their laxative effects. Always seek advice from your healthcare provider before using magnesium specifically to manage constipation.

Final Thoughts

Constipation is a recognised side effect of GLP-1 medications such as Ozempic®, Wegovy®, Mounjaro®, and Zepbound®, but for many people it can be managed with balanced nutrition, adequate hydration, regular physical activity, and gradual increases in fibre intake.

If symptoms are severe, persistent, or accompanied by severe abdominal pain, persistent vomiting, blood in the stool, or an inability to pass gas, seek medical advice promptly. Early assessment can help identify the cause and ensure you receive the most appropriate care.

At Just Glow, we believe long-term wellness starts with balanced nutrition, healthy lifestyle habits, and evidence-based supplementation. Explore our carefully selected, science-backed wellness range to complement your health journey and support your long-term wellbeing.