Placebo-controlled weight-management trials in the Saxenda label (3 mg).
Heartburn and indigestion across GLP-1 medicines
Why it happens
When the stomach empties slowly, food and acid stay in it longer. More pressure in a full stomach makes it easier for acid to push up into the esophagus, which causes the burning feeling.
Lying down soon after eating, large late meals and trigger foods like coffee, alcohol, chocolate and citrus can make it worse.
When it starts and fades
Reflux and indigestion tend to be most noticeable when starting treatment and after dose steps, along with other stomach effects that were mostly mild to moderate in trials.
Ongoing heartburn more than twice a week, or symptoms that wake you at night, are worth raising with your care team.
What helps
- Make dinner smaller and finish it at least 3 hours before bed.
- Stay upright after meals instead of lying on the couch.
- Raise the head of your bed slightly if night symptoms bother you.
- Notice personal triggers such as coffee, alcohol, mint, chocolate or tomato sauce.
- Eat slowly and stop when you first feel full.
- Ask a pharmacist about over-the-counter options that fit your other medicines.
How to use it
- Enter your numbers. Switch between US and metric units at any time.
- Results update as you type, and the formula is shown so you can check it.
- Copy the link, save the plan on this device, or print it for your next appointment.

These are estimates, not a diagnosis. A clinician can account for your health history and medicines.
Other Saxenda side effects
Common questions
How common is heartburn and indigestion on Saxenda?
In the trials behind the label, 10% of people on Saxenda reported it, vs 3% on placebo.
Why do I have acid reflux on Ozempic?
Semaglutide slows stomach emptying, so food and acid stay in the stomach longer. That can push acid upward, especially after large or late meals.
Does heartburn on a GLP-1 go away?
It often eases as you adjust to each dose and learn your portion limits. Persistent reflux should be checked.
Can I take antacids with Mounjaro?
Many people can, but ask your pharmacist to check them against your other medicines first.
Sources
Clinician review pending. Drafted from primary sources and waiting for sign-off by a licensed clinician (MD, DO or PharmD) before launch. Every number is checked against its source. Drug facts are re-checked quarterly, prices monthly and whenever a label changes. How we review · Report an error