Foods that cause sulfur burps include eggs, meat, fish, broccoli, cauliflower, cabbage, garlic, onions, beans and dairy. They hold sulfur compounds. Bacteria in your gut and mouth turn those into hydrogen sulfide. That gas smells like rotten eggs. Beer, fizzy drinks and fatty meals can make it worse. Your own trigger list is probably shorter.
Sulfur burps feel alarming. They are usually harmless. This guide covers the 10 top food triggers. It explains why each one works, how to find your own, and when something other than food may be the cause.
This guide is general education, not medical advice. A doctor can find the cause of burps that will not go away.
What are sulfur burps?
Sulfur burps are belches that smell like rotten eggs. The smell comes from hydrogen sulfide, a gas made when bacteria break down sulfur-containing compounds. Most cases link to diet and pass within hours or days. Frequent ones can point to reflux, infection or slow digestion.
Burps are mostly swallowed air. Gas enters your digestive tract when you swallow air and when gut bacteria break down undigested carbohydrates. It leaves through your mouth as a burp or through the other end as flatulence.
Air has no smell. Sulfur compounds add the smell. They ride up with the air. They come from three places:
- Your food. Some foods carry sulfur compounds that smell on their own.
- Your mouth. Sulfur-producing bacteria live on the back of the tongue and in the throat. They release smelly gases.
- Your stomach and upper gut. Reflux, slow stomach emptying and some infections give bacteria more time and a path upward.
Diet feeds all three. In a controlled feeding study, sulfide levels in the gut rose sharply with diet changes. The authors point to sulfur-containing amino acids and sulfite as likely drivers. A 2026 review adds that gut sulfide production rises with higher protein intake.
What the science covers: Research on gut sulfide is solid. Studies on sulfur burps themselves are rare. Most advice comes from gut-gas science and clinician experience. Treat food lists as clues, not proof.
10 foods that cause sulfur burps (and what to try instead)
These foods are triggers, not villains. Many are healthy. Do not cut them for good unless testing shows they bother you.
People differ. In a 2019 diet study, levels of sulfate-reducing gut bacteria varied from person to person. That may explain why a friend eats broccoli with no trouble.
1. Eggs
Eggs are the classic trigger. They are rich in sulfur-containing amino acids. Gastroenterologist Rudolph Bedford, MD, names diet as a primary culprit. He points to eggs and other high-protein foods like chicken, fish and beef.
Try: One egg, not three. Eat slowly.
2. Meat, poultry and fish
These foods are protein-dense. Protein carries sulfur-containing amino acids. Big portions hit hardest. Protein shakes and bars count too. They deliver a lot of protein at once.
Try: Keep portions near 3 ounces, about the size of a deck of cards. Spread protein across the day.
3. Broccoli, cauliflower, cabbage, Brussels sprouts and kale
Cruciferous vegetables are rich in sulfur compounds. Their fiber also feeds gut bacteria. They are nutrient-dense, so keep them in your diet if you can.
Try: Smaller portions. Cooked instead of raw. Spread them across the week.
4. Garlic, onions and leeks
Alliums are loaded with sulfur compounds. That is why they smell so strong. Raw forms are strongest. Cooking mellows them.
Try: Use less. Cook them well. Add flavor with herbs, ginger or lemon.
5. Beans, lentils and chickpeas
Legumes pack protein and fermentable fiber. Both feed gut bacteria. Fiber is still essential, so do not drop it for good.
Try: Soak dried beans. Rinse canned beans. Start with a quarter cup. Add more over a few weeks.
6. Milk and other dairy
Dairy works two ways. Milk protein carries sulfur-containing amino acids. Lactose can add trouble too. Lactose intolerance is one of the digestive conditions linked to sulfur burps. Undigested lactose ferments in your gut.
Try: Swap in lactose-free milk for two weeks. Note any change.
7. Beer and wine
Alcohol may trigger reflux. Beer adds fizz. Wine contains sulfites, which form during fermentation. Gut bacteria can use sulfite to make hydrogen sulfide, as the feeding study above notes.
Try: Skip alcohol for two weeks and compare. If you drink wine, check the label for sulfites.
8. Dried fruit and other sulfite-treated foods
Makers add sulfites to dried fruit to keep its color and shelf life. They also appear in some baked goods, snacks and jams. Consumer Reports advises checking labels for sulfur dioxide and ingredients ending in “sulfite.” Gut bacteria can turn sulfite into hydrogen sulfide.
Sulfites can also cause allergic-type reactions. The FDA estimates about 1 in 100 people react, and asthma raises the risk. Wheezing or hives after these foods needs a doctor.
Try: Choose unsulfured dried fruit. Read labels.
9. Soda and sparkling water
Fizz puts extra gas into your stomach. More gas means more burps. Mayo Clinic notes that eating fast, drinking through a straw, chewing gum and sucking hard candy make you swallow more air.
Try: Drink still water. Sip, do not gulp. Skip the straw.
10. Fried, fatty and heavy meals
Fat slows stomach emptying. Food that sits longer gives bacteria more time. Fatty meals slow emptying further. Bedford notes that when the stomach empties poorly, food sits and makes gas.
Try: Choose lighter meals. Bake or grill. Eat smaller portions.
Calmer foods to lean on while you test
Many people tolerate plain rice, potatoes, carrots, zucchini, cucumbers, oatmeal and fresh fruit. Build meals around them for a week or two. Then add triggers back one at a time.
Read Also: Indian Diet After Hysterectomy Surgery: A Recovery Guide
How to find your own trigger
A food diary beats guessing. Triggers differ by person. Use this plan.
- Days 1 to 7: log everything. Write down each meal, snack and drink. Add the time. Add any burps and a smell score from 0 to 3.
- Day 8: pick one suspect. Choose the food that shows up most before smelly burps.
- Days 8 to 10: remove it. Change nothing else.
- Days 11 and 12: add it back. Eat a normal portion. Watch the next 24 hours.
- Repeat with the next suspect.
- Keep what is safe. Trim what is not.
Copy this tracker into your notes app:
| Date and time | Food and portion | Burps (yes or no, when) | Smell (0 to 3) | Notes |
|---|---|---|---|---|
| Example: Mon 8:00 | 2 eggs, toast, black coffee | Yes, 10:30 | 2 | Ate fast |
Stop if you lose weight, vomit or have pain. Call a doctor. Do not cut whole food groups for weeks without a dietitian.
Quick fixes that do not cut food
- Slow down. Chew with your mouth closed. Talk after you swallow.
- Eat smaller meals. Large, protein-rich meals are a common trigger.
- Skip gum, hard candy and straws. They add swallowed air.
- Limit fizz and alcohol. Both add gas or may cause reflux.
- Clean your tongue. Brush gently from the back toward the front. A scraper works too.
- Ask a pharmacist about antacids if you also have heartburn. Simethicone is sold for gas.
- Be wary of folk fixes. Apple cider vinegar, manuka honey and baking soda lack solid proof for sulfur burps. Check with a doctor before using baking soda.
Sulfur burps on Ozempic, Wegovy and Mounjaro
GLP-1 drugs slow stomach emptying. That is part of how they work. A 2024 clinical review confirms the slowdown. Food sits longer. Bacteria get more time with it.
Drugs.com notes that belching is listed in the FDA package inserts for many GLP-1 drugs. Labels call it “eructation.” In label trials, about 7 percent of Wegovy users reported belching, versus under 1 percent on placebo. Zepbound ranged from 4 to 5 percent, versus 1 percent on placebo.
Many users describe a sulfur smell. Slowed digestion is the likely reason.
What helps: Eat smaller meals. Cut fatty and fried foods. Eat slowly. Skip fizzy drinks. Use the diary plan above. Call your prescriber if burps persist or you vomit. Do not stop or change your dose on your own.
When it is not the food
Did you avoid triggers and the burps stayed? Look at these causes.
- Acid reflux (GERD). Reflux can push bad-smelling stomach gas up into your mouth.
- H. pylori infection. Frequent burping, bloating and stomach pain are common symptoms. Doctors test for it and treat it with antibiotics.
- Giardia. This waterborne parasite causes diarrhea, gas, smelly greasy stools and cramps, per the CDC. Symptoms usually last 2 to 6 weeks. Some health sources also link it with sulfur burps.
- SIBO. That means too many bacteria in the small intestine. NIDDK lists it among causes of extra gas.
- Slow stomach emptying (gastroparesis). Bedford says food that sits in a slow stomach creates gas.
- Other causes. Celiac disease, IBS, some medications, stress and anxiety can all play a role.
When to see a doctor
See a doctor if you burp persistently more than three times a week, says Medical News Today. Also go if burps come with:
- Abdominal pain, including pain that wakes you at night
- Vomiting
- Diarrhea
- Blood in vomit or stool
- Unintended weight loss
Seek urgent care for severe abdominal pain or vomiting blood.
Bedford says the smell is mostly an inconvenience. A swollen belly is what usually needs action. Bring your food diary. It speeds up diagnosis.
Read Also: Why Does Coffee Make Me Nauseous? 9 Causes and What Actually Helps
FAQs
Eggs are rich in sulfur-containing amino acids. Gut bacteria break these down into hydrogen sulfide. A big or fast meal gives them more to work with. Try one egg at a time and eat slowly. If other foods cause burps too, ask a doctor about reflux or infection.
Rarely. Gastroenterologist Rudolph Bedford, MD, says the smell is mostly an inconvenience. A swollen belly is what usually needs action. See a doctor if burps are frequent or come with pain, vomiting, diarrhea or weight loss.
Food-related burps usually fade within a few hours to a couple of days, says Paul Daidone, MD, FASAM. They last longer when a condition drives them. Burps that keep returning deserve a doctor’s check.
Beer, soda and sparkling water add gas. Wine contains sulfites. Alcohol may also trigger reflux. Plain still water is the safest pick while you test your triggers.
No. Eggs, broccoli, garlic and beans are nutritious. Cut only the foods your diary flags. Add the rest back. Talk to a dietitian before any long restriction.
Your next step: start a 7-day food log
Sulfur burps smell bad. They are rarely serious. Food is the most common cause. Start with the 10 triggers above. Log your meals for a week. Change one thing at a time. See a doctor if burps are frequent or come with red flags.
Copy the tracker above into your notes app and log tomorrow’s breakfast.
Sources
- NIDDK. Symptoms & Causes of Gas in the Digestive Tract.
- Mayo Clinic. Gas and gas pains: symptoms and causes.
- Mayo Clinic. H. pylori infection: symptoms and causes.
- SingleCare. Sulfur burps: Causes & treatment. Medically reviewed. Quotes Rudolph Bedford, MD, and Paul Daidone, MD, FASAM.
- Medical News Today. Everything you need to know about sulfur burps. Medically reviewed by Cynthia Taylor Chavoustie, MPAS, PA-C.
- The American Journal of Clinical Nutrition. Contribution of dietary protein to sulfide production in the large intestine: an in vitro and a controlled feeding study in humans.
- Sulfide dynamics at the gut-microbiota interface: diet, oxygen and redox interplay. 2026 review.
- Gut Microbes. Influence of short-term changes in dietary sulfur on the relative abundances of intestinal sulfate-reducing bacteria. 2019.
- Better Health Channel, Victoria, Australia. Halitosis or bad breath.
- CDC. Symptoms of Giardia Infection.
- HealthyChildren.org, American Academy of Pediatrics. Sulfites: A Sensitive Issue.
- Consumer Reports. The real risks of sulfites.
- Drugs.com. Do GLP-1 drugs like Ozempic or Mounjaro cause sulfur burps?
- IAPAM. Experiencing sulfur burps with Ozempic.
- The Journal of Clinical Endocrinology & Metabolism. Clinical Consequences of Delayed Gastric Emptying With GLP-1 Receptor Agonists and Tirzepatide. 2024.
- Colgate. Sulfur burps: what are they.
This article is educational and does not replace care from a doctor. Sulfur content and trigger foods vary by person.
DT Nimra Naqvi is an MPhil-qualified clinical nutritionist specialising in therapeutic, condition-specific nutrition care. She designs personalised nutrition plans for metabolic, hormonal, digestive, and recovery-related conditions, grounded in evidence-based practice. Her work focuses on integrating nutrition with medical treatment and rehabilitation to support sustainable health outcomes. DT Nimra Naqvi provides professional online consultations for international clients across the USA, UK, and Europe.
