Side effects
Wegovy side effects
This page explains common and serious themes around wegovy side effects. It is not a diagnosis tool.
At a glance
- UK information only — not medical advice
- Prescription-only medicines
- Follow your prescriber, pharmacist or nurse
When to get help
- Seek urgent medical help for severe or persistent abdominal pain, especially if it spreads to your back or comes with vomiting.
- Speak to a clinician urgently if vomiting or diarrhoea is persistent or you cannot keep fluids down.
- Call NHS 111 or seek emergency care if you have signs of a serious allergic reaction, sudden vision changes on semaglutide, or any symptom your prescriber told you to treat as urgent.
Always follow your prescriber, pharmacist or nurse. SlimBee does not provide personal medical advice.
What people often report
Symptoms vary by dose, timing and individual tolerance.
Many digestive symptoms ease after the body adjusts — but not always.
When to seek urgent help
Severe abdominal pain, persistent vomiting or signs of allergic reaction need urgent assessment.
Medical disclaimer: SlimBee is an independent UK information website. We do not prescribe, dispense or sell medicines. Always follow your prescriber, pharmacist or nurse.