This is one of the questions that comes up regularly in bariatric communities, and it is an important one because the answer is not what most people expect. If you have had gastric sleeve surgery, or you are planning it, you need to know about NSAIDs.
What Are NSAIDs?
NSAIDs stands for non-steroidal anti-inflammatory drugs. The most common ones people reach for without thinking are ibuprofen, aspirin at full anti-inflammatory doses, naproxen, and diclofenac. These are widely available over the counter and many people take them routinely for headaches, back pain, period pain, and general inflammation.
Why NSAIDs Are Problematic After Bariatric Surgery
NSAIDs work by inhibiting enzymes that produce prostaglandins, chemicals involved in both inflammation and in protecting the stomach lining. In a standard stomach, this reduced protection is something most people tolerate reasonably well in the short term. After a gastric sleeve, the situation is different.
Your sleeve is smaller, with a much higher concentration of acid relative to its surface area. The protective lining of the stomach is also more vulnerable after surgery. NSAIDs can cause ulcers, erosions, and inflammation of the remaining stomach lining, and the risk is meaningfully higher in bariatric patients than in the general population. This is why the guidance from virtually every major bariatric programme is to avoid NSAIDs entirely after gastric sleeve surgery.
Does This Apply Forever?
The standard recommendation is to avoid NSAIDs indefinitely after a gastric sleeve. This is not a short-term caution that applies only in the first few months of healing. The structural change to your stomach is permanent, and so is the increased risk. Some bariatric teams are slightly less absolute in their guidance for patients who are many years out from surgery and have no ongoing issues, but the default position is permanent avoidance.
What Can You Take Instead?
Paracetamol is the standard recommendation for pain relief after bariatric surgery and is generally safe to take at normal doses. It does not carry the same stomach-damaging risk as NSAIDs. For pain that paracetamol alone does not manage adequately, speak to your GP about alternatives. There are options that do not carry the gastric risks of NSAIDs.
If you are prescribed NSAIDs by a doctor who is not aware of your surgical history, tell them. This happens more than you would expect, particularly with GPs who may not have the detail of your bariatric procedure on their records, or with emergency departments where you may be seen by someone unfamiliar with your history. It is your responsibility to flag it, and it matters.
Our Experience
James was a regular ibuprofen user before surgery, particularly for back pain. Breaking that habit took deliberate effort, not because of cravings but simply because reaching for ibuprofen had become automatic. Having paracetamol easily accessible at home, and being clear in your own head about why the switch matters, helps. Two years on and neither of us touches NSAIDs.
We are not medical professionals. Everything we share is based on our own personal experience. Please speak to your bariatric team or GP before making any decisions about your health or medication.
About this content
This blog is written by James and Kirsten, a couple from the UK who had gastric sleeve surgery together in March 2024.
We started this blog because we couldn't find any sources of content that details before surgery, the surgery and then life post surgery - so we decided to write one ourselves.
Everything on this site is based on our own experience and the research we have done along the way. It is not medical advice. Gastric sleeve surgery is a serious procedure and every patient's journey is different. Please always consult your own bariatric team or GP before making any decisions about your health or treatment.
Some posts on this site may contain featured or sponsored content, or affiliate links. Where this is the case, it will always be clearly stated at the top of the article. Our opinions are always our own.
Publish Date: 14 July 2026 | Last Reviewed: 14 July 2026 | Next Planned Review: 14 January 2028