An official website of the United States government
Here’s how you know
Official websites use .gov A
.gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS A
lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
... body to a more active form known as T3. There is research underway to determine whether replacement ... levothyroxine alone can be improved by also providing T3, but the jury is still out on this ...