A severe allergic reaction, also known medically as anaphylaxis, is a rare but serious side effect of both Mounjaro and Wegovy. Recognising the signs early is critical, as this condition requires immediate medical intervention.
Use this information to:
Identify the clinical signs of a severe allergic reaction to Mounjaro or Wegovy.
Understand the necessary emergency steps to take if symptoms occur.
Symptoms of a severe allergic reaction
The following symptoms could indicate that you are experiencing anaphylaxis after administering Mounjaro or Wegovy:
Respiratory distress: Difficulty breathing, wheezing, or severe shortness of breath.
Swelling: Visible swelling of the lips, tongue, or throat.
Swallowing issues: Significant difficulty swallowing or a feeling that the throat is closing.
Cardiovascular changes: A rapid or pounding heartbeat, often accompanied by feeling faint or dizzy.
When to seek urgent medical help
Call 999 or head to your nearest A&E right away if you notice any of the symptoms listed above after taking Mounjaro or Wegovy.
Anaphylaxis is a medical emergency and cannot be managed at home. When speaking with emergency medical staff, ensure you inform them that you have recently administered a dose of weight loss medication (Mounjaro or Wegovy).
Need further support?
If you still need help after reviewing the information above, additional assistance is available.