This is a common side effect and can occur in up to 1 in 10 people taking Mounjaro or Wegovy.
Here’s what we recommend to help you:
- Rotate your injection site each week. You can alternate between different areas such as your lower stomach, thigh, arm, and buttocks. This helps prevent irritation.
- Make sure you’re correctly injecting your medication
For Wegovy, see the correct injection technique here.
For Mounjaro, see the correct injection technique here.
Need Extra Support?
Many people find they can manage mild injection site reactions on their own using the tips above. However, if you'd like to discuss managing your symptoms in more detail, or seek advice on injecting your medication properly, we’re here to support you—just reach out to our clinical team.
| When to Contact Your GP or call 111 |
Contact your GP or call 111 if:
- You notice intense redness around the injection site
- You notice a rash that worsens or spreads around the injection site
- You notice warmth or pus at the injection site
- You also have a fever or chills
Make sure you inform your healthcare provider you have been taking weight loss medication.
| When to Seek Urgent Help |
Call 999 or go to A&E if you experience difficulty breathing, or swelling of the lips, tongue, or throat. These could be signs of a severe allergic reaction (also called anaphylaxis), which can be life-threatening.