Levothyroxine: Drug Interactions

2 source-based articles maintained by the HealthRX.com Editorial Team.

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Jul 1, 2025latest review

Levothyroxine: Drug Interactions library

Showing 2 of 2 clinical reviews.

Clinical ReviewsJul 1, 2025

Synthroid and Anesthesia: Perioperative Interaction Guide

A guide to levothyroxine (Synthroid) interactions with anesthesia and perioperative care, including when to hold the dose, cardiovascular risks, and what surgeons need to know.

QuestionsJul 14, 2025

Synthroid and Imaging Contrast Dye: What You Need to Know Before Your Scan

Does iodinated contrast dye interact with Synthroid (levothyroxine)? Learn the clinical evidence, timing guidelines, and what to tell your radiologist before any imaging study.