Iron and Levothyroxine: Can You Take Them Together?
Here's what FDA drug labeling and NIH supplement data show.
Interaction Found
What happens: Iron reduces absorption of thyroid hormone replacement.
What to do: Separate doses by at least 4 hours.
Source: FDA-approved drug labeling and NIH Office of Dietary Supplements fact sheets.
Learn more
Levothyroxine — full safety profile, side effects, and all known interactions.
Iron — supplement labels containing this ingredient.
Frequently asked questions
Can I take Iron with Levothyroxine?
Separate doses by at least 4 hours.
What happens if you take Iron and Levothyroxine together?
Iron reduces absorption of thyroid hormone replacement.
What should I do if I take both?
Separate doses by at least 4 hours. Always consult your healthcare provider before combining supplements and medications.
SafeCheck provides drug interaction information from FDA-approved product labeling (openFDA). This is for informational purposes only and is not medical advice. Always consult your healthcare provider before making medication decisions.