A 60-year-old woman with hypothyroidism is stable on levothyroxine 125 µg. She starts ferrous sulfate. What advice should be given?...

Question

A 60-year-old woman with hypothyroidism is stable on levothyroxine 125 µg. She starts ferrous sulfate. What advice should be given?

Accepted Answer

Separate levothyroxine and iron by at least 4 hours

Answer

No interaction expected

Answer

Take both together with food

Answer

Stop levothyroxine temporarily

Answer

Increase levothyroxine dose immediately

prescribing safety assessment MCQ (SBA): Drug Interaction (Levothyroxine and Iron)