I am Dr.Charles and I'm happy to help with your question today .
Synthroid is given when the thyroid does not produce enough of this hormone on its own.It is prescribed to treat hypothyroidism (low thyroid hormone).
It is a replacement or supplemental therapy in hypothyroidism.
So as your doctor has prescribed you synthyroid,it means that you are hypothyroid.
Hope this helped Your satisfaction is my prime goal and I'm happy to answer any follow-up questions you may have.Please feel free to ask if you have any other question.
Thank you for using just answer website.
Kind Regards- Dr Charles