Can I Take These?

Can You Take Caffeine and Levothyroxine Together?

No documented interaction was identified between levothyroxine and caffeine in the sources reviewed.

No documented interaction identifiedEvidence: Moderate

What the interaction means

Levothyroxine's FDA label does not mention caffeine. MedlinePlus's caffeine page does not mention levothyroxine.

No documented interaction was identified in the authoritative sources reviewed. This is not a guarantee that no interaction exists for every dose, formulation, or individual -- it means the sources checked did not document one.

Practical context

Both substances' own current authoritative sources were checked directly, full text, in both directions.

What the sources say

Levothyroxine Sodium Capsules — FDA Prescribing Information — YARAL Pharma, Inc. (via DailyMed, U.S. National Library of Medicine)Caffeine — MedlinePlus, U.S. National Library of Medicine

Last reviewed 2026-08-23

Medical information disclaimer: this information is general and educational. It does not diagnose conditions, prescribe treatment, or determine whether a combination is safe for you personally. Follow your prescription label and ask a pharmacist or clinician before starting, stopping, or combining products. Full disclaimer.

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