Normal thyroid-stimulating hormone (TSH) levels generally fall between 0.5 and 5.0 milliunits per liter (mU/L). If your TSH level is higher than 5.0 mU/L it suggests an underactive thyroid, or ...

Thyroxine and L-thyroxine are two of the 10 most frequently prescribed medicinal products. "One large health insurance company ranks thyroid hormone at fourth place in the list of most-sold ...

Q: I was told I have an underactive thyroid gland. After I started taking thyroid hormones, my TSH read 4.7. Three months later, it dropped to 0.8, and the doctor told me to reduce my dose of thyroid ...