Why anti-inflammatory painkillers are restricted after surgery | CION Cancer Clinics

Brufen and other anti-inflammatory painkillers can increase bleeding, strain the kidneys and damage the stomach lining. Straight after an operation, when the body is healing and often short of fluid, those risks are higher, so many surgeons restrict them.

What these medicines are

Doctors call them NSAIDs, which stands for non-steroidal anti-inflammatory drugs. They include ibuprofen, diclofenac and many others. They work well for pain and swelling, which is why they are so widely sold without a prescription. They are not the same as paracetamol, even though both are used for pain.

Restricted does not always mean banned

Some patients are given them after surgery, for a short time, when the team judges the kidneys, stomach and bleeding risk are fine. Others are told to avoid them entirely. Both instructions can be right. They depend on the operation and the person.

Why the instruction can feel confusing

You may have been given an anti-inflammatory on the ward, and then told not to buy one at home. On the ward, your kidney tests and wound are being checked every day. At home, nobody is checking, so the balance of risk is different.

Yes, often. In the right person, a short course can reduce the need for strong painkillers and the drowsiness and constipation that come with them. The decision is a balance, made by the surgeon and anaesthetist.

What the team weighs

They look at your kidney blood tests, your age, how much blood was lost, whether you are drinking well, your stomach history and which operation you had. They also check whether you take blood thinners or medicines for blood pressure that affect the kidneys.

Who they usually do not suit

They are generally avoided in people with kidney disease, a past stomach ulcer or bleeding, heart failure, asthma made worse by painkillers, or a high bleeding risk. Older people and those who are dehydrated need extra caution. Pregnancy is another reason to avoid them.

What this page cannot tell you

It cannot say whether you in particular should take one, or for how long. If your discharge list includes an anti-inflammatory, take it as written. If it does not, ask before adding one. Never change the plan on your own.

Why other doctors may say something different

A family doctor or a local chemist may suggest an anti-inflammatory for joint pain, a fever or a headache in the weeks after your operation. They may not know about the surgery. Tell them what operation you had and when, and show your discharge summary. That one step prevents most mix-ups. If the advice still differs, call the surgical team and ask which to follow.