Description and Brand Names

Drug information provided by: IBM Micromedex

US Brand Name

  1. Levothroid
  2. Levoxyl
  3. Synthroid
  4. Tirosint
  5. Unithroid


Levothyroxine is used to treat hypothyroidism, a condition where the thyroid gland does not produce enough thyroid hormone. Levothyroxine is also used to help decrease the size of enlarged thyroid glands (also called a goiter) and to treat thyroid cancer.

This medicine is available only with your doctor's prescription.

This product is available in the following dosage forms:

  • Capsule, Liquid Filled
  • Solution
  • Tablet