I'm on a weight-loss injection and I need an operation. Do I have to stop the drug first?

The worry is legitimate and mechanical. These drugs work partly by slowing how fast the stomach empties, and under general anaesthesia the reflexes that keep stomach contents out of the lungs are lost. So the question of whether to pause the injection before surgery follows directly.

The recommendation is to continue#

The Korean position is that these medications should be continued in most patients, with risk assessed case by case. That is worth stating plainly, because the intuitive answer — stop it to be safe — carries costs of its own: interrupted glycaemic control, weight regain, and patients who never restart.

Why fasting rules were never enough#

The document's starting point is broader than one drug class. Sticking to a fasting interval does not guarantee an empty stomach and never did — diabetes, obesity, pain, opioids, pregnancy and anxiety all slow emptying. These injections have exposed an existing weakness in the standard approach rather than creating a new problem.

What kind of guidance this is#

The committee is unusually direct about its own standing: the evidence base is insufficient to formally support evidence-graded guidelines, and these recommendations were developed through expert discussion where robust evidence is lacking. No trial has measured aspiration rates with and without these precautions. That is a reason to read the recommendation as sensible practice rather than as settled fact.

The short version for a patient: tell the anaesthetist you are on the drug, well before the day. Expect to be asked to take clear fluids only for about a day rather than to stop the injection. And if an ultrasound of your stomach is done before you go under, that is a precaution being taken, not a sign something has gone wrong.