take levothyroxine (Synthroid, etc) FIRST THING in the morning on an empty stomach
December 2008
It's important to take levothyroxine (Synthroid, etc) FIRST THING in the morning on an empty stomach...because absorption can be decreased by calcium, iron, fiber, and other substances.
New evidence suggests that even coffee MIGHT reduce absorption.
Patients should wait at least 30 minutes before eating...and 4 hours to take supplements with calcium, iron, magnesium, or aluminum.
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