Medications · GLP-1

Wegovy Before Surgery

Wegovy is semaglutide for weight loss, the same medicine as Ozempic. Its main surgery concern is a slower-emptying stomach.

Medically reviewed by Dr. Saurabh Shukla, Anesthesiologist · Last updated August 5, 2026

Quick answer

Wegovy slows how fast your stomach empties, which matters for anesthesia. Current multi-society guidance says many patients can continue their GLP-1 before elective surgery. Higher-risk patients may need individual steps such as a 24-hour clear-liquid diet. There is no single 'stop X days' rule. Tell your team you take it.

Why it matters

GLP-1 medicines like Wegovy delay stomach emptying. Under anesthesia, food left in the stomach can be breathed into the lungs (aspiration). Which is why your team needs to know.

Guidance changed recently: rather than everyone stopping the drug, the focus is on identifying who is higher risk (for example, ongoing nausea or being in the dose-increase phase) and managing them individually.

Do not stop without instruction

Don't stop or continue Wegovy based on a web page. If you also use it for diabetes, don't stop without a blood-sugar plan. Get a personal instruction from your team.

What to ask your doctor

  • Should I take my usual Wegovy dose before surgery, or hold it?
  • Should I follow a clear-liquid diet for 24 hours beforehand?
  • Do my symptoms (nausea, bloating) make me higher risk?
  • Anything different because it's weekly dosing?

Red flags, call your team

Red flags, call your team

  • Ongoing nausea, vomiting, or bloating
  • You recently increased your dose
  • You also take it for diabetes (needs a sugar plan)

References

  • American Society of Anesthesiologists (ASA) & multi-society consensus on GLP-1 receptor agonists before anesthesia. asahq.org

Frequently asked questions

Do I stop Wegovy before surgery?

Not necessarily. Many patients can continue GLP-1 medicines before elective surgery; higher-risk patients may follow a 24-hour clear-liquid diet or hold the dose. Tell your team and follow their advice.

Calculate your exact fasting window Now get the precise times to stop eating & drinking before your surgery.