Levothyroxine and calcium
Can I take levothyroxine with calcium?
Levothyroxine and calcium should be reviewed for timing because calcium products can affect thyroid medicine absorption and thyroid lab control.
Last reviewed: June 12, 2026
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Source boundary
This preview links levothyroxine identity and label-search anchors plus the NIH ODS calcium fact sheet. It does not set a personal timing schedule.
Clinical boundary
Ask a clinician or pharmacist how to separate levothyroxine from calcium supplements, antacids, multivitamins, or fortified products for your exact prescription.
FAQ preview
Why does timing matter?
Calcium can affect how thyroid medicine is absorbed, so timing should be reviewed with the prescription label and care team.
Does this include antacids or multivitamins?
It can. Calcium may appear in supplements, antacids, multivitamins, and fortified products, so product labels matter.
Can this page interpret thyroid labs?
No. Thyroid lab interpretation and dose changes belong with the prescriber.