Sulfur burps

Sulfur burps are exactly what they sound like: burps that smell of rotten eggs (hydrogen sulfide gas). They’re one of the more notorious — and more googled — GLP-1 side effects, unpleasant but usually harmless. This entry is the short definition; the full sulfur burps guide covers the fixes, how long they last, and the red flags.

Why they happen

The leading explanation ties back to slowed gastric emptying. When food sits in your stomach longer, it has more time to interact with gut bacteria that produce sulfur-smelling gas — especially after sulfur-rich or high-fat meals. The medication doesn’t create the smell; it creates the conditions (slow, full stomach) that let it build up. Some people also get the classic pairing of sulfur burps followed by diarrhea.

What tends to help

The short version: smaller, lower-fat meals; easing up on sulfur-heavy foods (eggs, red meat, garlic, onions) while symptoms flare; staying upright after eating; and OTC anti-gas remedies. It’s mostly the same playbook as nausea, since the root cause overlaps — the guide walks through each fix.

When to mention it

On their own, sulfur burps are a nuisance, not an emergency. But burping paired with persistent vomiting, severe abdominal pain, or an inability to keep food down is a different signal — it can point toward gastroparesis or a dose that’s too aggressive, and it’s worth a call to your prescriber rather than just riding out.