Why Wegovy Can Cause Eggy Burps
Wegovy works by acting on GLP-1 receptors involved in appetite regulation. One well-documented effect is slower gastric emptying — food moves through the stomach more gradually than usual. When food lingers longer, it has more time to ferment, and that fermentation can produce hydrogen sulphide gas, which is what creates that distinctive eggy or rotten-egg smell when you burp.
This effect is most commonly reported in the first few days after starting Wegovy or after moving to a higher dose strength. As the body adapts to the medicine, many people find the symptom becomes less frequent or less intense over time — though the pattern varies from person to person.
What else can make it worse?
- High-fat or high-sulphur foods — eggs, red meat, cruciferous vegetables (broccoli, cauliflower, cabbage) and some dairy can increase sulphur gas production when digestion is already slowed.
- Eating too quickly or in large portions — smaller, slower meals tend to sit more comfortably when gastric emptying is reduced.
- Carbonated drinks — these can add extra gas on top of what the digestive process is already producing.
If you are also experiencing eggy burps on tirzepatide, the mechanism is similar — you can read more about eggy burps on Mounjaro and sulphur burping on tirzepatide for a fuller picture of how GLP-1 medicines affect digestion.
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Tracking Eggy Burps with GLP Trackr
Logging how and when eggy burps appear is genuinely useful — not to treat them, but to spot the patterns that help you and your prescriber understand what is going on. GLP Trackr's side-effect tracker lets you record symptoms like burping day by day, so you can see at a glance whether they cluster around dose days, particular foods, or specific times of the week.
Pairing that with the food log — whether you snap a photo of your meal or search manually — can help reveal whether certain foods are making the symptom worse. Over time, the app builds a picture of your personal patterns rather than generic guesswork.
This kind of record is also something concrete to bring to your next appointment. Instead of trying to recall how often it happened or what you ate, you have a clear log to share with your prescriber.
For a broader overview of digestive and other side effects associated with GLP-1 medicines, the GLP-1 side effects hub covers the full range of commonly reported experiences. And if you are curious how the symptom compares across medicines, see eggy burps on Mounjaro explained.
A note on when to seek advice: eggy burps are uncomfortable but are generally considered a common, benign digestive side effect. However, if burping is accompanied by severe abdominal pain, persistent vomiting, or any symptom that feels serious or unusual, contact your healthcare professional promptly — do not wait. GLP Trackr helps you record what you experience so you can have an informed conversation with your prescriber; it is not a substitute for their guidance.
Start logging your symptoms and spotting your own patterns — GLP Trackr is free to try for 7 days on the App Store and Google Play.
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Frequently asked questions.
Wegovy slows gastric emptying, meaning food stays in the stomach longer and has more time to ferment. This fermentation can produce hydrogen sulphide gas, which causes the sulphurous, eggy smell. The effect is most common after starting the medicine or increasing the dose.
For many people, eggy burps are most noticeable in the days after a new or increased dose and ease as the body adjusts. The timeline varies between individuals. If the symptom persists or feels severe, discuss it with your prescriber or doctor.
Foods high in sulphur — such as eggs, red meat, and cruciferous vegetables like broccoli and cabbage — may worsen the symptom when digestion is already slowed. Eating smaller portions more slowly and avoiding carbonated drinks can help some people.
Burping alone is generally a common, benign digestive side effect. If it comes with severe abdominal pain, persistent vomiting, or any symptom that feels serious, contact your healthcare professional promptly rather than waiting.
GLP Trackr's side-effect tracker lets you log symptoms day by day alongside your food diary, so you can identify patterns — such as whether burping clusters around dose days or certain meals — and share that record with your prescriber.