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 fatigue and tiredness — incidence, timing, and management (2026)

Timing

When fatigue and tiredness appears

First weeks after starting, paired with caloric deficit.

Mechanism

Why it happens

Undernutrition, glucose variability.

Management

What to do

Protein intake, electrolytes, regular meals.

When to escalate

Severe fatigue + palpitations or confusion. Check for hypoglycemia if diabetic.

Editorial note

What the evidence says

For non-diabetic patients on Ozempic, fatigue is rare. For diabetics tapering sulfonylureas, watch for hypoglycemia symptoms.

Other Ozempic side effects

Ozempic and nausea →
Ozempic and constipation →
Ozempic and diarrhea →
Ozempic and vomiting →
Ozempic and headaches →

Fatigue on other GLP-1s

Wegovy and fatigue and tiredness →
Mounjaro and fatigue and tiredness →
Zepbound and fatigue and tiredness →
Saxenda and fatigue and tiredness →

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.