Sulfur burps on a GLP-1: why they happen and what helps

Rotten-egg burps on Mounjaro, Zepbound or Wegovy? Here is why slowed digestion causes sulfur burps, which foods to watch, and when to call.

Why they happen

GLP-1s slow stomach emptying. Food that stays longer can ferment and produce gases, including hydrogen sulfide, the rotten-egg smell.

Foods that may make them worse

Often higher in sulfur	Examples
Some vegetables	Broccoli, cabbage, cauliflower, Brussels sprouts
Eggs	Especially large portions
Some meats	Red meat in big portions
Fizzy drinks	Add gas
Some protein shakes	Check ingredients

You don’t need to cut these out. Try smaller amounts and see what changes.

What helps

smaller meals, eaten slowly
stop at the first sign of fullness
stay upright after eating
sip water through the day
a short walk after meals
ask your pharmacist about over-the-counter options

When to call your prescriber

burps with severe stomach pain, vomiting or fever
symptoms that stop you eating or drinking
burps that continue for weeks and bother you

A real-life example

Jen, 41, had sulfur burps every evening on Mounjaro. Her log showed they followed big dinners with eggs or broccoli. Smaller dinners, eaten earlier, and a walk afterward made a big difference.

Common questions

Are sulfur burps dangerous?

Usually not, but call your prescriber if they come with severe pain, vomiting or fever.

Do sulfur burps go away?

Many people find they ease as their body adjusts, especially if they adjust meal size.

Is it more common after a dose increase?

Many people notice stomach side effects most after increases.