Proper Use

Drug information provided by: Micromedex

This medicine usually needs to be taken for the rest of your life. Do not stop taking this medicine or change your doses without first checking with your doctor. It may take several weeks before you start to notice an improvement in your symptoms .

Dosing

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 oral dosage form (tablet):
    • For the treatment of hypothyroidism:
      • Adults—At first, one tablet of liotrix (Thyrolar-1/2) containing 6.25 microgram (mcg) of liothyronine and 25 mcg of levothyroxine once a day. Your doctor may increase your dose by one tablet of liotrix (Thyrolar-1/4) containing 3.1 mcg of liothyronine and 12.5 mcg of levothyroxine every 2 to 3 weeks. However, the dose is usually not more than one tablet of liotrix (Thyrolar-3) containing 37.5 mcg of liothyronine and 150 mcg of levothyroxine once a day.
      • Children—Follow dosing for the treatment of congenital hypothyroidism .
    • For the treatment of congenital hypothyroidism:
      • Children 0 to 6 months of age—At first, 3.1 mcg of liothyronine and 12.5 mcg of levothyroxine once a day. Doses may be increased as needed. However, the dose is usually not more than 6.25 mcg of liothyronine and 25 mcg of levothyroxine once a day.
      • Children 6 to 12 months of age—At first, 6.25 mcg of liothyronine and 25 mcg of levothyroxine once a day. Doses may be increased as needed. However, the dose is usually not more than 9.35 mcg of liothyronine and 37.5 mcg of levothyroxine once a day.
      • Children 1 to 5 years of age—At first, 9.35 mcg of liothyronine and 37.5 mcg of levothyroxine once a day. Doses may be increased as needed. However, the dose is usually not more than 12.5 mcg of liothyronine and 50 mcg of levothyroxine once a day.
      • Children 6 to 12 years of age—At first, 12.5 mcg of liothyronine and 50 mcg of levothyroxine once a day. Doses may be increased as needed. However, the dose is usually not more than 18.75 mcg of liothyronine and 75 mcg of levothyroxine once a day.
      • Children over 12 years of age—The usual dose is 18.75 mcg of liothyronine and 75 mcg of levothyroxine once a day. Doses may be increased as needed .

Missed Dose

If you miss a dose of this medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses.

Storage

Store in the refrigerator. Do not freeze.

Ask your healthcare professional how you should dispose of any medicine you do not use.

Keep out of the reach of children.

Do not keep outdated medicine or medicine no longer needed.