Gut health
Can NSAIDs cause bloating?
They can contribute. Anti-inflammatory painkillers such as ibuprofen, naproxen and meloxicam can irritate the stomach and the lining further down the gut, especially with long-term use. If you take one regularly and have gut symptoms, raise it with the clinician who prescribed it rather than stopping it yourself.
Clinically reviewed by Dr. Ambily Kushal, RD, MS, PhD · Published · Last reviewed
How do NSAIDs affect the gut?
They reduce substances that protect the stomach lining and can make the gut lining more permeable, which can lead to low-grade inflammation.
NSAIDs are one of the two most common causes of stomach ulcers, along with the stomach infection Helicobacter pylori. Research also describes effects further down the gut, where increased permeability can lead to low-grade inflammation, and sometimes to erosions or bleeding.
The risk rises with long-term use, higher amounts and use alongside other risk factors. Symptoms can be vague: bloating, fullness, indigestion or discomfort after meals, rather than the sharp pain people expect from an ulcer.
What should I do if I think my painkiller is the problem?
Don’t stop or change a prescribed medicine on your own. If you think one is affecting your gut, raise it with the clinician who prescribed it.
- Write down when you started the medicine and when your gut symptoms began.
- Bring the full list of what you take, including over-the-counter painkillers, to your prescriber.
- Ask whether a different approach to pain, a gradual change or added stomach protection makes sense for you.
- Ask your dietitian to help you keep a food and symptom diary to share with your care team.
Which symptoms need a doctor right away?
Black or bloody stools, vomiting blood or material that looks like coffee grounds, or severe stomach pain need urgent care. These can be signs of bleeding.
What did this look like for one patient?
A woman with years of bloating despite a clean diet had taken meloxicam for back pain for a long time. Her prescribing clinicians tapered it while keeping her pain managed, and her digestive symptoms resolved within about three months.
The painkiller was the likely cause, never confirmed by endoscopy, and her course is not a promise of results. It shows why a medicine history belongs in every gut assessment.
How can a dietitian help?
A dietitian looks at your whole picture, including medicines, and supports your gut with gentle, step-by-step changes while your prescriber handles the medicine.
That includes a symptom diary, regular meals, fiber at a level you tolerate, and a plan to add back any foods you have cut out, so your diet gets wider, not narrower. Your dietitian can also share what the diary shows with your prescriber.
What patients say about this kind of care
Questions about medicines belong in any search for the cause of gut symptoms.
“She was very strategic, asking questions to get to the possible root causes”
Knowing how a medicine can affect the gut makes the conversation with your prescriber easier.
“She listened to me and gave me so much important, vital information about my gut health.”
Excerpts from patient reviews of Dr. Ambily Kushal, quoted word for word. Each describes one person’s care; individual experiences vary and are not a promise of results.
Frequently asked questions
Which painkillers are NSAIDs?
Common ones include ibuprofen, naproxen, diclofenac, meloxicam and aspirin. Acetaminophen is not an NSAID. Check the label or ask your pharmacist if you are not sure.
Should I stop taking my NSAID?
Do not stop or change a prescribed medicine on your own. Talk with your prescriber, who can weigh your pain control against your gut symptoms.
Can occasional ibuprofen cause bloating?
Occasional use is less likely to cause problems than regular, long-term use, but anyone with ongoing gut symptoms should mention every painkiller they take to their doctor.
Will my gut settle if the medicine changes?
Often, if the medicine was a main cause, but it can take weeks. Your doctor may also check for other causes, such as Helicobacter pylori or celiac disease.
Sources
- Mechanisms of Damage to the Gastrointestinal Tract From Nonsteroidal Anti-Inflammatory Drugs (Bjarnason et al., 2018) (Gastroenterology)
- Symptoms & Causes of Peptic Ulcers (Stomach or Duodenal Ulcers) (National Institute of Diabetes and Digestive and Kidney Diseases)
- Diagnosis of Celiac Disease (National Institute of Diabetes and Digestive and Kidney Diseases)
Related reading
Our condition guides are general education, not medical advice. Talk with your doctor about your own diagnosis, tests and medicines.