Interaction checker → Calcium + Thyroid hormone
Serious — worth a conversationCan you take Calcium with thyroid hormone?
Calcium blocks your thyroid medication
What happens
Calcium binds levothyroxine in the gut and can cut absorption enough to make your dose ineffective.
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. Levothyroxine first thing, calcium at dinner.
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.
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