A member asked:

I drink coffee in morning can that affect my thyroid medication? i also take metformin, could that affect absorption?

A doctor has provided 1 answer
Dr. Joseph Mathews answered

Specializes in Internal Medicine - Endocrinology

Wait for an hour: If you drink black coffee, it shouldn't change your levothyroxine absorption. If you put cream or sugar in it, you should try to wait about an hour after taking you medication. You also ideally would want to wait to take your metformin separately as well.

Answered 11/22/2017

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