Will taking synthroid and metformin cause hyper glacimia
12 Feb 2011
Metformin on its own shouldn't cause hyperglycemia.
It doesn't specifically say that Synthroid can cause hyperglycemia.
However, there could be a potential interaction between Synthroid and metformin. The efficacy of oral hypoglycemic agents and insulin may be diminished by agents like levothyroxine... so metformin might not work as well and therefore the blood sugars may be raised.
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