Proper Use

Drug information provided by: Merative, Micromedex®

A nurse or other trained health professional will give you this medicine in a medical facility. It is given through a needle placed into one of your veins.

You will receive a few doses of this medicine, then your doctor may switch you to an oral dosage form.


The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.

The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.

  • For injection form (powder for solution):
    • For the treatment of hypothyroidism:
      • Adults—50 to 100 micrograms (mcg) injected into a muscle or vein once a day. People with very serious conditions caused by too little thyroid hormone may need higher doses.
      • Children—Dose is based on body weight and must be determined by your doctor.
  • For injection form (powder for solution):
    • For myxedema coma:
      • Adults—The loading dose is usually 300 to 500 micrograms (mcg) injected into a vein once a day. The maintenance dose is usually 50 to 100 mcg injected into a vein once a day. Your doctor may adjust your dose as needed and tolerated.
      • Children—Use and dose must be determined by your doctor.