Can Mounjaro (tirzepatide) cause hives?
Yes. Mounjaro can cause allergic skin reactions, including hives (urticaria). In safety information for tirzepatide, allergic reactions are listed as possible side effects, and hives are consistent with that type of reaction.[1]
What would hives from Mounjaro look like, and when do they happen?
Hives usually appear as raised, itchy welts that can move around on the skin. They can show up soon after a dose or later, depending on the person and the immune response.
If hives occur after starting Mounjaro or after a dose increase, it’s important to treat that timing as a potential link to the medication.[1]
When are hives a sign of a serious allergic reaction?
Hives can be part of a more severe allergic reaction. Seek urgent care or emergency help if hives come with any of the following: trouble breathing, swelling of the face/lips/tongue, dizziness/fainting, or widespread rash.[1]
What should you do if you get hives after taking Mounjaro?
Do not ignore new hives after a dose. Contact the prescriber promptly for guidance on whether to stop or continue Mounjaro and whether you need treatment for the allergic reaction.[1]
Are there other common causes of itchy rash while on Mounjaro?
Yes. People can develop rashes for many reasons, including other new medications, foods, infections, or underlying allergy conditions. Still, because Mounjaro can be associated with allergic reactions, hives soon after dosing should be taken seriously until your clinician rules out a medication reaction.[1]
Sources
[1] https://www.drugs.com/sfx/mounjaro-side-effects.html