Synthroid is a alternate for a hormone that is normally generated by your thyroid gland to control the body's energy and metabolism. Levothyroxine (generic Synthroid) is given when the thyroid does not generate enough its own hormone.
Levothyroxine heals hypothyroidism (low thyroid hormone). Synthroid is also used to heal or prevent goiter (enlarged thyroid gland), which can be caused by hormone imbalances, surgery, radiation treatment, or cancer.
Levothyroxine should not be used to heal obesity or some weight problems.
Since thyroid hormone happens usually in the body, almost anyone can take levothyroxine. Patient should not use this medication if you have had a heart attack, an adrenal gland problem that is not controlled by treatment, or a thyroid disorder called thyrotoxicosis.