I need to share what happened to me because I want others to be aware. I've been on semaglutide 1.7 mg for 5 months. For the past 3 weeks I've had: constant nausea, feeling full after 3 bites, bloating that makes me look pregnant, and twice I've vomited undigested food 8+ hours after eating it.

Went to my GI doctor, had a gastric emptying study, and the result: gastroparesis. At 4 hours, 62% of the meal was still in my stomach (normal is <10% remaining at 4 hours).

My GI doctor told me to stop semaglutide immediately. I'm scared this won't reverse. Has anyone else developed gastroparesis on GLP-1s? Did it resolve after stopping?

First — I'm glad your GI doctor identified this and you're getting appropriate management. This is an important topic.

Let me clarify a critical distinction:

GLP-1 RAs delay gastric emptying by design. That is one of their primary mechanisms of action — it's how they reduce appetite and improve postprandial glucose control. A degree of slowed emptying is expected and therapeutic.

Gastroparesis is when that slowing becomes pathological — causing symptoms like persistent nausea, vomiting of undigested food, early satiety beyond what's functional, and demonstrable delayed emptying on a standardized gastric emptying study.

The key question is whether this represents:

1. Drug-induced gastroparesis — the GLP-1 RA has slowed emptying beyond the therapeutic range. This typically reverses after discontinuation (within 2-5 half-lives, so several weeks for semaglutide).
2. Unmasked underlying gastroparesis — you may have had subclinical gastroparesis (common in patients with metabolic syndrome, diabetes, or prior abdominal surgeries) that became symptomatic when the drug slowed things further. This may or may not fully reverse.

In most cases I've seen, gastric emptying normalizes within 4-8 weeks of discontinuation. The prognosis is generally good.

This happened to me at month 4 on tirzepatide 10 mg. Vomiting food I'd eaten 6 hours earlier. The smell was horrific and I knew something was really wrong. My GES showed severe delay.

I stopped tirzepatide and it took about 6 weeks for my emptying to normalize. Repeat GES at 8 weeks was totally normal. So at least in my case, it was fully reversible.

However — I can't go back on GLP-1 RAs. My GI doc says I'm at high risk for recurrence. That was really hard to accept because the weight loss was life-changing. I'm managing with dietary approaches now.

I want to note something for people who are reading this and getting scared: clinical gastroparesis from GLP-1 RAs is rare. The vast majority of people experience mild-moderate slowed emptying and tolerate it fine. What the OP is describing is the extreme end of the spectrum.

Warning signs that normal slowed emptying has crossed into gastroparesis territory:

• Vomiting undigested food hours after eating
• Feeling full for 12+ hours after a small meal
• Significant unintentional weight loss beyond your goal
• Inability to eat solid foods
• Severe bloating and visible abdominal distension
• Symptoms worsening progressively over weeks rather than stabilizing

If you're experiencing these, get evaluated. If you're just mildly nauseous and full after meals, that's the drug working as intended.

UPDATE — 3 weeks after stopping semaglutide: the nausea is about 50% better. I can eat small meals without vomiting now. Still getting full fast but it's improving. My GI doc wants to repeat the gastric emptying study at the 6-week mark.

I'm cautiously optimistic. The hardest part honestly is watching the scale start to creep back up and knowing I might not be able to go back on the medication that was helping so much. But I'd rather be a higher weight than unable to keep food down.