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Side effect · Zepbound

Burping on Zepbound

Sulfur burps, the rotten-egg kind, are a side effect people talk about online far more than they expect, and the label lists it as eructation.

Clinician review pending Updated
On Zepbound
3% to 6%
label rate
On placebo
under 1%
same trials
Extra vs placebo
up to 5points
attributable to the drug, roughly

Pooled placebo-controlled weight-management trials in the Zepbound label (5 mg, 10 mg and 15 mg).

Burping across GLP-1 medicines

Wegovyplacebo under 1%
7.0%
Zepboundplacebo under 1%
6.0%
Highest rate across label doses. Different trials and populations, so compare with care.

Why it happens

When food stays in the stomach longer, gut bacteria and digestion have more time to produce gas. Some of that gas comes back up as burps.

Sulfur burps get their smell from hydrogen sulfide. Foods rich in sulfur, like eggs, red meat, broccoli, cabbage and some protein powders, can add to it.

When it starts and fades

Burping tends to be most common when starting treatment and after dose increases, the same window as other stomach side effects, which were mostly mild to moderate in trials.

It often eases as portions shrink and you learn which foods sit heavily for you.

What helps

  • Eat smaller meals and chew slowly to swallow less air.
  • Cut back on fizzy drinks and drinking through straws.
  • Notice whether eggs, cruciferous vegetables or certain protein powders set it off.
  • Space protein across the day rather than one large serving.
  • Take a short walk after meals to help digestion.
  • Ask a pharmacist about over-the-counter gas remedies.

Other Zepbound side effects

Nausea25% to 29%Diarrhea19% to 23%Vomiting8% to 13%Constipation11% to 17%Stomach pain9% to 10%Heartburn and indigestion7% to 9%Injection-site reactions6% to 8%Fatigue5% to 7%Hair loss4% to 5%Gas3% to 4%Bloating3% to 4%Dizziness3% to 5%

Common questions

How common is burping on Zepbound?

In the trials behind the label, 3% to 6% of people on Zepbound reported it, vs under 1% on placebo.

What causes sulfur burps on Mounjaro?

Food stays in the stomach longer, giving bacteria more time to make sulfur gas. Sulfur-rich foods and large meals can add to it.

How do I stop sulfur burps on Wegovy?

Smaller meals, fewer fizzy drinks and avoiding your personal trigger foods help many people. Ask a pharmacist about over-the-counter options.

Are sulfur burps dangerous?

On their own they are usually more annoying than harmful. See a clinician if they come with severe pain, fever or ongoing vomiting or diarrhea.

Sources

  1. Zepbound prescribing information (FDA label on DailyMed)
  2. SURMOUNT-1 trial publication

Clinician review pending. Drafted from primary sources and waiting for sign-off by a licensed clinician (MD, DO or PharmD) before launch. Every number is checked against its source. Drug facts are re-checked quarterly, prices monthly and whenever a label changes. How we review · Report an error