A large gland in the neck that functions in the endocrine system. The thyroid secretes hormones that regulate growth and metabolism.
Synthroid
LEVOTHYROXINE (Synthroid) is used for treating low thyroid activity and treating or suppressing different types of goiters. It is also used with surgery and other medicines for managing certain types of thyroid cancer.
Levothyroxine is a thyroid hormone. Thyroid hormones are produced and released by the thyroid gland and regulate the body's metabolism. When the thyroid gland is underactive (hypothyroidism) it does not produce enough thyroid hormone and metabolism slows.