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I was wondering the same thing! The only thing that I found online was a statement stating that Allegra could possibly interfere w/ the efficacy of Metformin's blood glucose control - which could be diminished, causing hyperglycemia. . . . Therefore, it is best to consult w/ your physician, however, if you physician has written you the prescriptions, be sure he/she is closely monitoring you for any adverse reactions.

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14y ago

What else can I help you with?