Could I be allergic to metformin?

It's possible to be allergic to metformin (Glucophage, Fortamet), a prescription medication that's used to control blood sugar levels in people with type 2 diabetes. The signs of an allergic reaction to metformin include:
  • hives
  • trouble breathing
  • a swollen face, lips, tongue or throat

Get emergency medical help right away if you develop any of these symptoms. If it turns out that you are allergic to metformin, talk to your doctor about other ways to control your blood sugar levels.

Continue Learning about Metformin

Metformin Drug: The New Fountain of Youth?
Metformin Drug: The New Fountain of Youth?
Metformin, a common prescription drug that’s used to treat type 2 diabetes, is making headlines worldwide – but the big news has nothing to do with di...
Read More
Can I take metformin with insulin for my type 2 diabetes?
Stacy Wiegman, PharmDStacy Wiegman, PharmD
Metformin (Glucophage, Fortamet) is a prescription medication that helps to control blood sugar le...
More Answers
Is my father at risk of lactic acidosis from taking metformin?
Stacy Wiegman, PharmDStacy Wiegman, PharmD
Anyone who takes the diabetes drug metformin (Glucophage, Fortamet) can be at risk of developing...
More Answers
How does metformin (Glucophage) help treat type 2 diabetes?
American Diabetes AssociationAmerican Diabetes Association
Metformin is an oral medicine used to treat type 2 diabetes. It lowers blood glucose by reducing...
More Answers

Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.