GLP-1 nausea: what to eat and what to avoid

Why GLP-1s can cause nausea

GLP-1 medications slow down how quickly your stomach empties and change the signals that tell your brain you're full. That's helpful for appetite, but it also means food sits in your stomach longer. Eating the same amount, or as quickly, as you did before can leave you feeling sick. Nausea is listed as one of the most common side effects in the prescribing information for Wegovy (semaglutide) and Zepbound (tirzepatide), and it's usually worst after starting or increasing a dose.^1,2

What helps³

• Eat smaller meals more often. Four to six small meals or snacks are usually easier than three large ones.
• Slow down. Put your fork down between bites and give each meal 20 minutes or more.
• Stop at the first sign of fullness. On a GLP-1, "comfortably satisfied" arrives sooner than you're used to, and pushing past it is a common trigger.
• Sip fluids between meals rather than with them. Drinking a lot alongside food can make you feel overfull.
• Choose plain, cool or room-temperature foods on bad days. Crackers, toast, rice, bananas, yogurt and broth-based soups are often easier to tolerate, and cooler foods tend to smell less strongly.
• Try ginger or peppermint. Some people find ginger tea, ginger chews or peppermint tea settling.

What to limit

• Greasy, fried and very rich foods, which stay in the stomach even longer.
• Very large portions, including at restaurants. Box half before you start.
• Lying down soon after eating. Stay upright for a couple of hours after meals.
• Alcohol and very sugary drinks, which can make nausea and reflux worse for some people.

Don't let nausea push out protein and fluids

When you feel sick, it's easy to drift toward plain carbohydrates only. Try to include a small amount of easy protein, such as yogurt, a protein shake or an egg, and keep sipping water through the day. Dehydration can make nausea worse.

When to call your prescriber

Contact your prescriber or seek care if you have vomiting that won't stop, can't keep fluids down, show signs of dehydration (such as dizziness or very dark urine), or have severe stomach pain that doesn't go away, with or without vomiting. Severe, persistent abdominal pain can be a sign of a more serious problem such as pancreatitis or gallbladder disease.^1,2 In an emergency, call 911.

The bottom line

For most people, nausea on a GLP-1 improves with smaller, slower, lower-fat meals and good hydration. If it's stopping you from eating enough, a dietitian can help you build a plan around your dose schedule and the foods you can tolerate.