Interaction checker → Iron + Thyroid hormone
Serious — worth a conversationCan you take Iron with thyroid hormone?
Iron blocks your thyroid medication
What happens
Iron chelates levothyroxine and sharply reduces absorption.
Drugs in this class include Levothyroxine / Synthroid, Liothyronine.
How far apart?
Leaving at least 4 hours between them avoids most of the effect.
What to do about it
Separate by at least 4 hours.
This is general information compiled from published pharmacology, not
advice about your situation. Your dose, your other medication and your bloodwork all matter,
and a pharmacist can see those in a way this page cannot.
Check your whole stack at once
Stackwise checks every pair in what you take, against your medication list, and moves things in your schedule when two of them need spacing apart.
Get the app