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Levothyroxine and Methimazole: Moderate Interaction - Drugvu

🏠›Levothyroxine›Interaction with Methimazole

Levothyroxine + Methimazole

Drug interaction

Moderate interaction

A moderate drug-drug interaction between Levothyroxine and Methimazole is recorded in public interaction data. Severity reflects the source classification; it does not describe your individual risk. Do not start, stop, or change either medicine based on this page.

What “moderate” means

A moderate interaction can matter in some people. The combination is sometimes used, but usually with caution - monitoring, timing changes, or dose adjustments.

What to do

Mention this combination to your pharmacist or prescriber. Do not stop either medicine without advice.

Side effects reported for both

Levothyroxine and Methimazole are each reported to cause the effects below. Taking them together can make these more likely or more pronounced - one of the ways a drug interaction matters.

FatigueHeadacheNauseaDiarrhoeaPainDizziness

Compiled from public adverse-event reports; an overlap, not a confirmed causal mechanism.

The two medicines

Active ingredient

Levothyroxine

Uses, side effects, dosage →· 626 recorded interactions

Active ingredient

Methimazole

Sulfur-Containing Imidazole Derivatives

Uses, side effects, dosage →· 135 recorded interactions

Source

DDInter 2.0 (CC-BY 4.0, https://ddinter.scbdd.com)

This is not medical advice. Drugvu is an independent aggregator of public records.