Side effects & safety

GLP-1 Digestive Side Effects & GI Health

Gastrointestinal effects are the most common reason people struggle in the first months of GLP-1 therapy. This cluster gathers every article on the digestive side of these drugs: how often nausea, constipation, diarrhea, reflux, and bloating occurred in the trials, the rarer gallbladder and pancreas warnings on the label and postmarketing reports of ileus, and what is known for people who start with a GI condition such as IBS, IBD, or gastroparesis.

66 research articles · newest update October 2026

Recently updated

Hiatal Hernia and Reflux on a GLP-1: What the Evidence Shows

A hiatal hernia weakens the barrier that keeps acid down, and excess weight makes it worse. GLP-1 drugs help by cutting weight and hurt by slowing the stomach. What the evidence says about which effect wins, and for whom it does not.

8 min read · Updated September 2026

SIBO and GLP-1 Drugs: A Plausible Mechanism With No Trial Data

Slowed motility is a recognized SIBO risk factor and GLP-1 drugs slow motility on purpose. That makes the question reasonable and the answer unsatisfying: nobody has tested it, and the symptoms overlap with ordinary side effects.

7 min read · Updated September 2026

Diverticulitis and GLP-1 Drugs: Risk, Evidence and What Actually Matters

Excess weight raises diverticulitis risk and losing it appears to lower risk, but GLP-1 drugs have not been linked to diverticular disease. The cohort numbers, what the drugs do and do not do to the gut, and why constipation is the part to manage.

9 min read · Updated September 2026

Sick Days on a GLP-1: Vomiting, Diarrhea and When to Hold a Dose

A stomach bug hits differently on a drug that already slows the stomach and suppresses thirst. What the trial data says about baseline symptoms, the medication combination that turns dehydration into kidney injury, and how to tell an illness from the drug.

8 min read · Updated September 2026

All 66 articles in this topic

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