“Sulfur burps” — burps that smell like rotten eggs — are a common and unpleasant complaint on GLP-1 medications. They come from hydrogen sulfide gas, and the slowed digestion these drugs cause can make them more likely. Here’s why they happen and what people commonly do to ease them. This is educational, not medical advice.
GLP-1 medications slow how quickly food leaves the stomach. When food sits longer, certain gut bacteria have more time to break down sulfur-containing compounds, producing hydrogen sulfide — the rotten-egg smell. Meals high in sulfur can add to it.
General, widely-reported comfort measures, not a prescription:
Because food choices matter here, logging meals alongside symptoms makes the pattern clear. Pepathary lets you note symptoms next to your dose and routine on your device.
The smell is hydrogen sulfide gas, produced when gut bacteria break down sulfur compounds in food. Slowed digestion on a GLP-1 gives them more time to do it.
Commonly reported culprits include eggs, garlic, onions, cruciferous vegetables, and heavy red-meat or dairy meals. Individual triggers vary.
They often ease as the body adjusts, and can flare briefly after a dose increase. Smaller, lower-sulfur meals help many people.
If they come with severe abdominal pain, persistent vomiting, or dehydration, contact a clinician rather than waiting it out.
Many find smaller meals and not lying down soon after eating reduces them. Effects vary from person to person.