Levothyroxine Absorption in Patients With Celiac Disease: Challenges and Therapeutic Strategies

Celiac disease can significantly impair levothyroxine absorption, complicating hypothyroidism management despite appropriate dosing. While a gluten-free diet often improves absorption, some patients continue to require high doses. Switching to liquid or softgel formulations can enhance levothyroxine bioavailability and symptom control. Optimizing therapy requires individualized approaches, including dietary intervention, formulation changes, and close monitoring, to achieve and maintain a euthyroid state. Relevant studies were reviewed and incorporated into this commentary to support evidence-based recommendations and highlight clinical considerations.