Compounded or counterfeit Mounjaro will look different from the authentic branded medication. Knowing what an authentic Mounjaro product looks like can help you avoid counterfeit or compounded medication. For additional information on counterfeit medicines and images of authentic Mounjaro click here.
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If you suspect you are using a counterfeit Mounjaro, you should report it to your pharmacy,
health care provider and Lilly Canada at 1-888-545-5972.

You should also save the medicine so that it can be tested. If you have
additional questions or concerns about the safety of any of Lilly’s medicines,
please call 1-888-545-5972.

Back to Mounjaro Vial Main Page
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How can I report an issue with the Mounjaro® vial?
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VV-Canada Medical-US-DEL-0204 05/2025
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