skip to main content

Coeliac disease supplement interaction — GPhC CRA MCQ

Instant feedback + full explanation. One question, done properly.

ModerateGastro-intestinal TherapeuticsCoeliac disease supplement interactionGPhC CRA

A 36-year-old woman newly diagnosed with coeliac disease starts ferrous sulfate for iron deficiency. She also takes levothyroxine each morning. What would you advise the patient?

Educational content. Not a substitute for clinical judgement or local policy.

Reveal the answer and explanation

Correct answer: B — Separate iron from levothyroxine to reduce absorption interaction

Iron salts can reduce levothyroxine absorption when taken together. Separating administration helps maintain thyroid control. Iron absorption may also be reduced by tea or coffee and improved by taking with vitamin C-containing drinks if tolerated. The patient should continue gluten-free dietary management and monitoring.

Reference: BNF; NICE CKS