Sulphur Burps on Wegovy: What Real Users Say
When people begin Wegovy (semaglutide), they brace themselves for nausea, constipation, or appetite loss. They expect a few uncomfortable days after their weekly dose. What they rarely expect is one of the most shocking, unpleasant, and embarrassing side effects users discuss online: sulphur burps.
Sometimes called "eggy burps," these belches smell like rotten eggs or sewage. They arrive suddenly, often without warning, and can linger for hours or days. Many users are completely blindsided by them, scrolling through forums in the early hours of the morning, desperately trying to work out what is happening inside their stomach.
What’s clear from real-world experiences is that sulphur burps are common - far more common than the official side-effect lists suggest. And while they can be mild for some, for others they trigger vomiting, diarrhoea, panic, or a complete fear of eating.
This article brings together what real Wegovy users say about sulphur burps: what they feel like, when they happen, what causes them, and what people try to make them stop.
"These burps are horrific" - the reality of sulphur burps
Many users describe their first sulphur burp as a moment of absolute confusion and disgust. The taste and smell are unlike anything they’ve experienced before. One user captured the shock vividly:
"Sulphur burps are awful and I’m so scared of them, the taste is horrid." -PeopleAreShit69
Others talk about embarrassment - not just because of the smell but because the burps can erupt loudly and unexpectedly, even in public.
"Oh my goodness - these burps are horrific… never been so embarrassed." -TartanJP
And for many, the first burp is the moment they realise something unusual is happening:
"I woke up this morning and burped and I was like… that was weird. Then it dawned on me, that was a sulfur burp." -Perfectly_Bland
The combination of foul taste, nausea, and the fear of vomiting makes sulphur burps one of the GLP-1 side effects that users dread the most.
What they actually feel like
If you’ve never had a sulphur burp, it’s hard to imagine just how unpleasant it can be. Users describe a mix of rotten eggs, sewage, and methane - a smell that can fill a room instantly. One person joked about their partner’s reaction:
"My fiancé was like, did you fart?!? Omg!" -mbeyley
Another was more blunt:
"It tasted like farts coming out of my mouth." -Allysonsplace
For some, the smell is so strong they instinctively try to escape their surroundings:
"I have to flee other people’s presence when I feel one coming on." -decuyonombre
Alongside the smell, sulphur burps often come with stomach gurgling, cramps, bloating, or a sense of heaviness in the gut. For many users, they’re not just an inconvenience - they’re a warning sign of what’s to come next.
When sulphur burps usually appear
Patterns vary from person to person, but many users eventually discover consistent triggers or timelines. One of the clearest trends is that sulphur burps often appear after increasing the dose.
A user on their way up the dosing ladder shared:
"I also got them on my 2nd dose of 1.7… never had them before this point." -KitKat2293
Others find that timing during the day plays a role. Evening and nighttime seem to be particular hotspots:
"They happen mostly toward night time for me for some reason." -Over-Mountain-1061
And for some, the burps arrive in cycles, recurring every few weeks and often followed by vomiting or diarrhoea:
"Every six weeks I get sulfur burps out of nowhere and then I throw up 1–2 times." -t-rextimemachine
These timelines point to a clear link between gastric emptying, meal timing, and dose adjustments.
Why they happen: the explanations users give
Although sulphur burps are not officially listed as a direct Wegovy side effect, users consistently describe mechanisms that make biological sense: slowed digestion, fermentation, and food sitting too long in the stomach.
One person put it in simple terms:
"The food is fermenting in your stomach." -nelly8888
Another described the sensation more vividly:
"Feels like a hamburger rotting in your stomach." -[deleted]
And some believe the issue stems from specific ingredients rather than digestion as a whole:
"I think it’s sugar or sweeteners - every single time." -awkward_toadstool
Regardless of the specific trigger, the underlying theme is the same: slowed gastric emptying lets bacteria break down food longer than usual, producing hydrogen sulphide - the gas responsible for the rotten-egg smell.
Common trigger foods and drinks
While sulphur burps can occur even with clean eating, users repeatedly call out certain foods and drinks that trigger or worsen them.
For some, the culprit is surprisingly simple:
"RICE. It’s always the rice for me and I don’t know why." -michele107
Others struggle with high-sulphur ingredients:
"Black pudding and egg… two hours later it was horrendous." -TartanJP
And drinks can be a hidden trigger too:
"Anything with sulphites - for me it was the squash I was drinking." -awkward_toadstool
Taken together, these reports suggest that individuals may have unique trigger foods - and that identifying them involves trial and error.
When burps turn into nausea, vomiting or diarrhoea
Perhaps the most unsettling part of sulphur burps is that they often signal a larger gastrointestinal episode. For many, the burps are the first sign that vomiting or severe diarrhoea is only hours away.
One user described a particularly difficult spell:
"Rotten egg burps, gurgling stomach, the runs… a week of nonstop symptoms." -NekoZombieRaw
Another recalled being violently sick:
"The sulfur burps were so bad I woke up at 3am and projectile vomited." -LALW1118
And for some, the cycle is predictable:
"Sulfur burps are always a harbinger of the apocalypse that is to come in the bathroom." -therealdanfogelberg
These experiences suggest that sulphur burps can sometimes be an early sign of significant gastric slowdown - especially when accompanied by nausea or cramping.
What helps - user-reported remedies
People try almost everything to stop sulphur burps. And while there’s no universal cure, several remedies appear frequently in successful reports.
Pepto is one of the most common tools:
"Pepto Bismol - it’s the only thing that kills the sulfur instantly." -designlady77
Others find relief in gut-friendly drinks:
"A yoghurt drink in the morning sorted mine out - Actimel was the key." -Corsairi
And some turn to herbal options:
"Peppermint oil supplements helped a lot - 1.7 was the worst." -noonelikesUwhenUR23
It’s important to note that different remedies help different people - which reinforces the idea that sulphur burps have multiple potential causes.
When home remedies don’t work
Not everyone finds relief straight away. Some users go through several combinations of supplements, diet tweaks and timing changes without success.
One person summed up the frustration well:
"I take gas x, enzymes, probiotics… nothing fully works." -Ok_Book9593
Another struggled even after eliminating trigger foods:
"Pepto didn’t make a difference, neither do Tums." -Ok_Book9593
These experiences highlight the complexity of gastric side effects on Wegovy - and why some users feel overwhelmed before finding a strategy that suits them.
The impact on daily life and social situations
More than just unpleasant, sulphur burps can be socially debilitating. Travel plans, work events, dates, and everyday interactions suddenly become anxiety-provoking.
One user feared an upcoming trip:
"I’m so worried people are going to smell my awful eggy burps while travelling - I want to cry." -EveryIndependence184
Another had to leave an event:
"Had to leave a social setting because the burps were so bad." -TartanJP
And for some, work becomes a challenge:
"Last time it happened I was on a work trip and had to excuse myself from a group dinner." -t-rextimemachine
These moments underscore how isolating sulphur burps can feel - especially when they’re unpredictable.
When to seek medical support
Most sulphur burps are benign, but persistent vomiting, severe stomach pain, or ongoing diarrhoea may indicate something more serious, such as acute gastric stasis.
One user raised concerns about repeated symptoms:
"Doctor is worried about gastroparesis - my GI issues are constant every day." -blueberrymintz
Another described how long food seemed to stay in their stomach:
"It was food from days ago… I’m sure my stomach is paralyzing for short bursts." -hannahjgb
These types of experiences deserve medical attention - especially if accompanied by dehydration or weight loss.
Pharmacist Alessandro Grenci adds:
"Sulphur burps on Wegovy usually happen because slowed digestion allows food to sit longer in the stomach, which can produce sulphur-based gas. They’re unpleasant but common, and for most people they settle as the body adapts or when diet is adjusted. If someone is vomiting repeatedly, unable to eat, or experiencing severe abdominal pain, that’s the point to speak to a GP or pharmacist for further assessment." -Alessandro Grenci, Superintendent Pharmacist at Medino
Conclusion: You’re not alone - and it usually improves
Sulphur burps can feel alarming, uncomfortable, and deeply embarrassing. But user experiences show they are very common, often connected to dose increases, specific foods, or slow digestion, and frequently improve over time.
One user’s experience captures this sense of relief:
"I had them for like a month… thankfully they’ve gone away now." -Atalyita
Another explained how the burps sometimes signal a brief stomach episode that eventually resolves:
"Sometimes it’s a sign I’m going to throw up - but after that it passes." -[deleted]
And others know from experience that the symptoms don’t last forever:
"Hopefully this just lasts today - I’ve had them before and they eventually go away." -Perfectly_Bland
While sulphur burps are an unpleasant part of the Wegovy journey for many, they are usually temporary - and with the right strategies, they often become manageable.
