Glu Glu
← Glossary

Gastroparesis

Gastroparesis means “stomach paralysis” — food emptying from the stomach far too slowly, or barely at all. It sits at the severe end of the same slowed gastric emptying that GLP-1 medications cause deliberately, which is why it comes up as a concern.

The nuance patients deserve

There’s an important distinction between expected slowed emptying and problem gastroparesis:

  • Expected: earlier fullness, smaller meals, some nausea after big or fatty meals — the intended effect, and manageable.
  • Problem: persistent nausea and vomiting, feeling full after just a few bites for days on end, vomiting undigested food eaten hours earlier, or being unable to keep meals down.

The medications reversibly slow the stomach; for most people it eases with adaptation and dose management. True, severe gastroparesis on GLP-1s appears uncommon, and the delayed emptying generally improves after stopping the drug — but symptomatic cases are reported, and GLP-1 labels and FDA updates now reflect awareness of it.

Why it’s worth knowing

Two practical reasons. First, if you ever need surgery or anesthesia, tell the team you’re on a GLP-1 — a slow stomach raises aspiration risk, and current guidance often involves holding doses beforehand. Second, the symptom pattern above is your signal to stop toughing it out and call your prescriber: severe or persistent vomiting isn’t “normal titration,” and dose reduction or a pause exists for exactly this.

The milder everyday version of this mechanism shows up as nausea and sulfur burps. Severe abdominal pain specifically also overlaps with pancreatitis — another reason not to self-diagnose bad stomach pain.