Why do I have sulfur burps on Wegovy?

Semaglutide slows gastric emptying — food stays в the stomach 2-4x longer than normal. This delayed transit lets gut bacteria ferment sulfur-containing proteins (eggs, meat, dairy, garlic, cruciferous vegetables), producing hydrogen sulfide gas. The "rotten egg" smell is the result. Mitigation: smaller meals, lower-sulfur protein sources (poultry, fish), avoid garlic/onions/eggs first 4 weeks, peppermint tea after meals. Persists past 12 weeks? Talk к your prescriber about anti-nausea support or slower titration. Not dangerous but socially disruptive.

Ozempic and vomiting — incidence, timing, and management (2026)

Timing

When vomiting appears

Tied to dose steps and overeating episodes.

Mechanism

Why it happens

Gastric retention exceeded.

Management

What to do

Smaller portions, deliberate stop-eating cues.

When to escalate

Daily vomiting, dehydration, hematemesis, severe upper abdominal pain.

Editorial note

What the evidence says

Most Ozempic vomiting is portion-size related. The body sets a new ceiling; meet it deliberately.

Other Ozempic side effects

Ozempic and nausea →
Ozempic and constipation →
Ozempic and diarrhea →
Ozempic and fatigue and tiredness →
Ozempic and headaches →

Vomiting on other GLP-1s

Wegovy and vomiting →
Mounjaro and vomiting →
Zepbound and vomiting →
Saxenda and vomiting →

Editorial summary, not medical advice. Incidence figures from FDA prescribing information and pivotal trial publications. Individual experience varies. Coordinate side effect management with your prescriber.