Synthroid

Medically Reviewed by Harshi Dhingra, M.D.

Last Reviewed: Jun 22, 2022

Drug Details


Availability:

Prescription only

Therapeutic Class:

Thyroid supplements

Forms:

Tablet, capsule, vial

Administration:

By mouth

Therapeutic Uses:

Hypothyroidism
Thyroid cancer (as an adjunct to surgery and radioiodine therapy)

Controlled Status:

Not a controlled substance


What is Synthroid (levothyroxine)?

Synthroid (sin throid) is a medication that replaces T4 thyroid hormone when the body does not make enough. It belongs to a class of medications called endocrine metabolic agents, hormone replacement agents, or thyroid supplements. Synthroid is an oral prescription medication that is used to treat hypothyroidism or an underactive thyroid gland. There may be other uses of Synthroid. Your healthcare provider can give you more information.

Who can take Synthroid (levothyroxine)?

Synthroid can be prescribed to infants, children, adolescents, and adults.