This survey is now closed - we needed 1000 responses, and we got them... and in record time! Thank you to everyone who participated in the survey - we're grateful for your input which will help to inform the development of treatment for hypothyroidism.

Although we have been limited to collecting 1000 responses to this online survey, we are still able to collect your comments on current treatments for hypothyroidism and use them for this project. If you would like to share your views please send them to by 1 July 2019 using the subject heading 'Levothyroxine replacement survey'.