Question to the Department of Health and Social Care:

To ask Her Majesty's Government whether they have evidence showing that there are more cost-effective products available than liothyronine for the treatment of thyroid disease; and if so, whether they will publish that evidence.

NHS England have sought advice from the leading clinical experts in this field. These are the Royal College of Physicians, the British Thyroid Association and the European Thyroid Association. These experts recommend that, for the vast majority of patients, levothyroxine alone is used in the treatment of hypothyroidism. They also advise that liothyronine should be considered in exceptional circumstances.