lifestyle
Why Does Mounjaro Cause Burping & How Can You Prevent It?
Starting Mounjaro for weight loss or blood sugar control can bring impressive results, but it may also come with an unexpected side effect, persistent burping and gas after meals. In GLP-1 medication management for safe weight loss, gut-related issues like nausea, bloating, and diarrhea can slow progress and shake confidence. Why does Mounjaro cause burping? This guide What to Expect With Semaglutide breaks down the most common reasons, from slower stomach emptying and acid reflux to swallowed air from appetite changes and food or drug interactions, and shares clear, practical strategies on diet tweaks, meal timing, simple remedies, and dosing adjustments to curb belching and avoid diarrhea, helping you manage weight and blood sugar more comfortably.
To make putting these tips into action easier, the MeAgain GLP-1 app tracks symptoms, supports safe dosing and titration, and offers tailored advice on food choices, probiotics, and antacids. So burping doesn’t derail your progress.
Table of Content
Why Does Mounjaro Cause Burping?
If you’ve started taking Mounjaro and noticed sulphur burps (yes, that rotten-egg smell), you’re not imagining things. No one wants their weight loss journey interrupted by eggy belches, but you’re far from alone. So what’s behind these sulphur burps on Mounjaro and more importantly, can you make them stop?
First, let’s be clear: they’re not listed as a top side effect. Still, plenty of people on GLP-1 medications like Mounjaro report experiencing them.
Simple Ways to Reduce Sulphur Burps on Mounjaro
So why does it happen? In short, sulphur burps occur when hydrogen sulphide gas builds up in your digestive tract. Usually, your body makes small amounts while breaking down certain foods, but changes to diet or medication can upset the balance, leaving that gas to escape in less-than-pleasant ways.
The good news: while unpleasant, these burps are usually harmless. Many people notice them from time to time, and for most, they fade with simple adjustments. They may not be the side effect you hoped for, but rest assured, they’re rarely anything to worry about.
Why Does Mounjaro Cause Sulphur Burps?
If you’re scratching your head (while holding your nose) and wondering why Mounjaro is causing these unpleasant burps, you’re not alone. The answer lies in how Mounjaro works and what it’s doing to your digestive tract.
Mounjaro, like other GLP-1 receptor agonists, works by slowing down how quickly food moves through your stomach. This delay helps you feel full for longer, which is excellent for managing appetite and cravings.
How Mounjaro’s Effect on Digestion Triggers Sulphur Burps
There’s a trade-off; slowing down digestion can sometimes cause food to sit longer in your stomach and intestines, allowing for more fermentation. Cue the sulphur gas! Here’s where it gets eggy.
When food (especially foods containing sulphur compounds like eggs, meat, dairy, and certain vegetables) sits too long in the gut, bacteria can produce hydrogen sulphide gas as they break it down.
The result? That lovely smell of rotten eggs coming from your burps. But don’t panic! This doesn’t mean Mounjaro isn’t working or that anything serious is wrong. It’s just a slightly stinky side effect of how the medication slows down your digestive tract.
How Common Are Sulfur Burps With Mounjaro?
Digestive side effects are common in people who take Mounjaro.
Some of the more common digestive side effects of Mounjaro include:
Nausea
Diarrhea
Decreased appetite
Vomiting
Constipation
Indigestion
Abdominal pain
What the Studies Say About Burping on Mounjaro
In studies of Mounjaro, burping was more common in people receiving Mounjaro than in those receiving a placebo.
See the following table for details:
Group | Percentage of people who reported burping |
People receiving a placebo | 0.4% |
People receiving 5 mg of Mounjaro | 3% |
People receiving 10 mg of Mounjaro | 2.5% |
People receiving 15 mg of Mounjaro | 3.3% |
Burping has also been reported as one of the more common side effects of Zepbound. This is a weight loss medication that contains tirzepatide, which is also the active ingredient in Mounjaro.
Note: The study results for Mounjaro or Zepbound didn’t state whether the burping reported was specifically sulfur burps. But because of how the drugs work, sulfur burps can occur.
Do Similar Drugs, Such As Ozempic, Also Cause Sulfur Burps?
Mounjaro is a type of drug called a glucose-dependent insulinotropic polypeptide (GIP) and GLP-1 receptor agonist. Mounjaro and other GLP-1 drugs delay emptying of the stomach. This helps them work effectively, but can cause specific side effects such as burping.
Any GLP-1 drug can cause sulfur burps. For example, burping is also a reported side effect of medications containing semaglutide, such as Ozempic and Wegovy.
Wegovy
Wegovy, another GLP-1 receptor agonist like Mounjaro, can cause similar common side effects, including sulfur burps.
Since the active ingredient in Wegovy works the same way as Mounjaro, it can lead to the same delayed gastric emptying that allows food to ferment and produce sulphur gas. So, if you switch to Wegovy, don’t be surprised if the burps follow!
Saxenda
Saxenda is another GLP-1 medication used for weight loss, and while it’s effective in controlling appetite and promoting weight loss, it also has the potential to slow down digestion.
Like Mounjaro and Wegovy, this slowing can sometimes result in the infamous sulphur burps.
Phentermine
Phentermine works differently from GLP-1 medications, as it’s a stimulant that suppresses appetite without affecting digestion in the same way.
While it’s less likely to cause sulphur burps, it can still cause other side effects like dry mouth or an upset stomach. If you’re trying to avoid eggy burps, this might be a better option, but as always, consult your healthcare provider.
When To Seek Medical Help
Most of the time, sulphur burps are nothing to worry about, just an annoying side effect of how Mounjaro works. But there are times when these eggy burps might signal something more serious, and it’s essential to know when to get medical advice.
1. Persistent Burps
If your sulphur burps are constant and don’t seem to improve with dietary changes, hydration, or over-the-counter medication, it might be time to speak to a healthcare provider.
Persistent burps can sometimes indicate an underlying issue like gastroesophageal reflux disease (GERD) or a more serious digestive problem.
2. Other Digestive Symptoms
If your sulphur burps are accompanied by other digestive symptoms like nausea, vomiting, bloating, abdominal pain, or diarrhoea, it’s essential to get checked out.
These symptoms could indicate that your body isn’t tolerating Mounjaro as well as expected, or there may be another issue affecting your digestion.
3. Severe Discomfort
If your burps are causing significant discomfort, chest pain, or abdominal pain, or if you’re noticing any unusual symptoms like unexplained weight loss (beyond what’s expected on Mounjaro), it’s worth seeking medical advice.
When to Seek Medical Advice About Mounjaro Side Effects
While Mounjaro is generally safe and effective, it’s always better to err on the side of caution when it comes to your health.
If you have other questions about how the side effects of Mounjaro compare with those of similar treatment options, talk with your doctor or pharmacist.
Questions For Your Next Clinic Visit To Make Care Efficient
Which of the following should you mention: how long the burps started after the dose change, whether specific foods trigger the smell, bowel habit changes, any worsening nausea or vomiting, and any weight changes or chest symptoms.
Ask whether a dose adjustment, switch in medication, or testing for SIBO or gastroparesis would be reasonable. I can list a short meal plan with low-sulfur food swaps and a simple symptom checklist to track changes day to day. Which would help you most right now?
Related Reading
• Why Am I So Hungry on Wegovy
• What Should I Expect the First Week of Wegovy
• Zepbound vs Wegovy Side Effects
• Wegovy vs Mounjaro Side Effects
• Wegovy vs Saxenda Side Effects
• Does Wegovy Make You Tired
• Can Wegovy Cause Sulfur Burps
• Why Am I Still Hungry on Mounjaro
• Can Wegovy Cause Yeast Infection
How to Get Rid of Mounjaro Burps
Cut The Eggy Burps: Foods To Avoid And Smart Swaps
Sulfur burps come from swallowed air and from gas produced when high-sulfur foods sit in the gut longer. Because Mounjaro slows gastric emptying, food can ferment more and release hydrogen sulfide, which smells like eggs.
Which foods are common triggers? Eggs, red meat, dairy, garlic, onions, cruciferous vegetables such as broccoli and Brussels sprouts, beans, and fried or very fatty dishes.
Try these practical swaps and tactics:
Keep a short food diary for a week. Did burps spike after eggs or a heavy meal?
Replace some eggs or red meat with chicken, fish, or plant proteins like tofu.
Cook cruciferous vegetables instead of eating them raw to reduce gas.
Cut back on fried foods and large, high-fat portions, especially at dinner.
Test one change at a time so you can tell what helps.
Do you notice a pattern when you eat certain foods or combinations?
Hydration That Helps Digestion
Water keeps the gut moving even when gastric motility slows. Aim to sip water steadily through the day rather than gulping big amounts with meals.
Practical tips:
Drink a glass 20 to 30 minutes before a meal to aid digestion.
Sip during and after meals, but avoid drinking large volumes while eating to limit bloating.
Try ginger tea or peppermint tea after meals to settle the stomach, unless you have reflux, in which case peppermint can irritate.
Skip carbonated drinks and beer when you get sulfur burps because bubbles add gas that increases belching.
Keep your fluid routine steady and straightforward, and watch for burping drops.
Smaller Plates, Smaller Burps: Meal Size And Timing That Work
Large meals and fatty plates sit in the stomach longer on tirzepatide. Breaking food into smaller portions limits fermentation and reduces gas.
Try this plan:
Eat four to six smaller meals or snacks instead of three large meals.
Aim for balanced mini meals with lean protein, easily digestible carbs, and some cooked vegetables.
Space meals about three to four hours apart and avoid heavy late-night dinners.
Chew slowly and relax while eating to reduce swallowed air.
If you cut a usual meal in half for several days, do burps become less frequent?
Move Gently After Eating To Speed Things Along
Light activity helps gastric emptying and reduces food sitting and fermenting.
Walk for 10 to 20 minutes after meals at a leisurely pace.
Try gentle upright stretches or a few yoga poses that encourage movement without straining.
Avoid lying down right after eating and choose loose clothing around the waist.
These small changes support digestive motility and often reduce belching and bloating.
The Over-the-counter options And Supplements To Try Carefully
If lifestyle changes are not enough, some over-the-counter remedies and supplements can help with gas and sulfur burps. Use them with caution while on Mounjaro and check with your clinician before starting:
Simethicone products can reduce trapped gas and belching.
Alpha galactosidase enzyme, like Beano, helps digest beans and cruciferous vegetables.
Lactase tablets help if lactose intolerance adds to the problem.
Antacids or bismuth subsalicylate can reduce acid-related symptoms that worsen belching.
Activated charcoal is sometimes used for odor control, but has mixed evidence and can interfere with medications.
Probiotic strains may help some people by shifting gut bacteria, though results are variable.
If burping is new, very frequent, or comes with severe abdominal pain, persistent nausea, vomiting, or rapid weight loss, tell your prescriber. They may evaluate for delayed gastric emptying, small intestinal bacterial overgrowth testing, or adjust your tirzepatide plan.
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• Does Ozempic Cause Kidney Stones
• Does Ozempic Cause Tooth Decay
• Does Wegovy Cause Insomnia
• Does Ozempic Cause Hair Loss
• Does Semaglutide Cause Bruising
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Download our GLP-1 app to Turn Your Weight Loss Journey into Your Favorite Game
MeAgain turns weight loss with GLP-1 medications into a simple daily routine you want to keep. The app pairs medication tracking with playful goals for protein, fiber, water, and movement, and your capybara avatar cheers you on as you hit targets.
Capture progress with the Journey Card so you save photos, measurements, and milestones while your body changes fast. MeAgain also nudges you to prevent common side effects like muscle loss and severe constipation, and it syncs data so you share clear reports with your prescriber.
Ready to make healthy habits stick and fun? Download MeAgain and turn your weight loss journey into your favorite game.
Starting Ozempic, Wegovy, or Mounjaro? How to Choose the Right Medication
Ozempic and Wegovy both use semaglutide and act primarily at GLP-1 receptors. Mounjaro uses tirzepatide and targets both GIP and GLP-1 pathways, which can deliver faster and larger weight loss for many people. Choose based on medical history, goals, and tolerance for side effects.
Ask about diabetes status, history of pancreatitis, gallbladder disease, pregnancy plans, and severe reflux or gastroparesis. Your clinician will help match dose schedules, adjust other medications, and plan monitoring for GI side effects and blood sugar shifts.
Why Mounjaro Causes Burping Gas and Bloating
Tirzepatide slows gastric emptying and reduces gut motility, which often causes nausea, bloating, belching, and burping. Slower stomach transit means food and gas spend more time in the stomach, which increases the chance of reflux and audible belching.
Nausea also makes people swallow air and sip more carbonated drinks, both of which produce extra burps.
How Diet and Digestion Changes Trigger Burping on Mounjaro
Changes in diet while taking the medication can increase intestinal fermentation and flatulence if fiber or certain carbohydrates are consumed quickly. Constipation traps gas and pushes it back up, which makes belching more common.
In short, delayed gastric emptying plus dietary shifts and slowed bowel habits explain most burping with Mounjaro.
Practical Tips to Reduce Burping on Mounjaro
Simple fixes for burping address the causes. Eat slowly and chew thoroughly to reduce swallowed air. Cut or limit carbonated beverages and chewing gum. Increase fiber gradually so gut bacteria adapt and use soluble fiber sources like oats and psyllium.
Treat constipation proactively so trapped gas does not lead to reflux or belching.
Protect Muscle Mass While You Lose Weight on GLP-1 Therapy
Rapid weight loss can include fat and lean tissue. To protect muscle, increase daily protein, and add regular resistance training. Aim for protein spread across meals to support muscle protein synthesis. Prioritize strength sessions two to three times a week and keep progressive overload so the body receives a clear signal to preserve muscle.
If appetite drops on medication, use dense protein options like Greek yogurt, eggs, protein shakes, and cottage cheese to help meet targets without excess volume. Your clinician or dietitian can set a protein range based on your current weight and goals.
Avoid Severe Constipation With Practical Tools
Constipation is common on GLP-1 therapies, but both discomfort and complications can be managed early. Hydration helps stool move, and fiber helps bulk stool if you increase it slowly. When increasing fiber, pair it with more water and activity to avoid extra bloating and gas.
Consider stool softeners or osmotic laxatives if needed, and consult your prescriber before starting stimulant laxatives regularly. Monitor bowel habits in the app so you notice trends early and adjust fiber, fluids, or medications before constipation becomes severe.
How MeAgain Keeps Your Gut and Muscle Goals Front and Center
MeAgain makes prevention concrete. Set protein targets and log meals; the capybara rewards consistent choices. Track fiber increases slowly and log water, so you do not add fiber without fluids. Use exercise check-ins for strength work and get reminders when you miss resistance sessions.
The Journey Card stores before and after photos and notes so you remember how you felt and what worked. The app also flags trends like rising constipation or frequent burping for you and your clinician, creating a clean path to early intervention.
Daily Checklist for Less Burping and Better Outcomes
Protein: Eat enough daily protein to preserve muscle. Spread intake across meals and use protein-rich snacks.
Fiber: Reach about 25 to 35 grams a day for most adults, but increase by only 5 grams every few days to limit gas. Favor soluble sources first.
Water: Drink consistently throughout the day. Aim for two to three liters depending on activity and climate.
Movement: Walk after meals to speed gastric transit and do resistance training two to three times a week.
Avoid: Carbonated drinks, chewing gum, and eating too fast, which can cause belching by increasing swallowed air.
Track these items in MeAgain so your capybara can celebrate wins and the app can spot problems early.
Medications and Strategies That Help Specific GI Symptoms
For persistent burping or reflux, talk to your clinician about short-term antacids or acid-reducing agents if appropriate. For constipation, osmotic agents like polyethylene glycol often help and are suitable for longer-term use under supervision.
If nausea and vomiting limit oral intake, dose adjustments or anti-nausea medications may be necessary. Always coordinate medication changes with your prescriber and use app logs to show symptom timing and severity.
When to Call Your Clinician About Burping or Other Symptoms
Contact your prescriber if you get severe abdominal pain, persistent vomiting, blood in stool, inability to pass stool despite repeated attempts, signs of dehydration, or rapid heart rate with dizziness.
New or worsening trouble swallowing, progressive reflux that limits eating, or pain that radiates to the back also warrant urgent review. Use MeAgain logs to produce a clear symptom timeline for your clinician so they can act quickly.
Related Reading
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• How Much Water Should I Drink on Semaglutide
• How Long Do Side Effects of Wegovy Last
• How to Make Wegovy Work Better
• What to Eat on Mounjaro
• Wegovy Mental Side Effects
• Does Ozempic Cause Eye Problems
• Tirzepatide Side Effects Long-term
• Does Mounjaro Affect Fertility
• What to Eat While on Wegovy