Synthroid, also known by its generic name, levothyroxine, is taken for hypothyroidism — a low-functioning thyroid gland. It's a hormone replacement for people who don't make enough thyroid hormone — ...

Prescribed to treat hypothyroidism and thyroid cancer, around 7% of the U.S. population takes levothyroxine. The drug is a synthetic version of a hormone called thyroxine and, according to a recent ...

A popular thyroid medication taken by 23 million Americans may be associated with bone loss, a startling new study finds. Levothyroxine — marketed under brand names such as Synthroid — is the ...