Thyrolar-1 / 4

Name: Thyrolar-1 / 4

What is Thyrolar-1/4 (liotrix)?

Liotrix is a man-made form of a hormone that is normally produced by your thyroid gland to regulate the body's energy and metabolism. Liotrix is given when the thyroid does not produce enough of this hormone on its own.

Liotrix treats hypothyroidism (low thyroid hormone). Liotrix is also used to treat or prevent goiter (enlarged thyroid gland), and is also given as part of a medical tests for thyroid disorders.

Liotrix should not be used to treat obesity or weight problems.

Liotrix may also be used for purposes not listed in this medication guide.

What happens if I miss a dose?

Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.

What should I avoid while taking Thyrolar-1/4 (liotrix)?

Do not change brands or change to a generic drug product without first asking your doctor. Different brands of liotrix may not work the same. If you get a prescription refill and your new pills look different, talk with your pharmacist or doctor.

If you also take cholestyramine (Prevalite, Questran) or colestipol (Colestid), avoid taking these medications within 4 hours before or after you take liotrix.

What other drugs will affect Thyrolar-1/4 (liotrix)?

Tell your doctor about all other medicines you use, especially:

  • birth control pills or hormone replacement therapy;

  • a blood thinner such as warfarin (Coumadin);

  • digoxin (digitalis, Lanoxin);

  • epinephrine (EpiPen) or norepinephrine (Levophed);

  • insulin or oral diabetes medication;

  • medications that contain iodine (such as I-131);

  • an antidepressant such as amitriptyline (Elavil, Vanatrip), doxepin (Sinequan), desipramine (Norpramin), imipramine (Janimine, Tofranil), nortriptyline (Pamelor), and others;

  • salicylates such as aspirin, Backache Relief Extra Strength, Novasal, Nuprin Backache Caplet, Doan's Pills Extra Strength, Pepto-Bismol, Tricosal, and others;

  • steroids such as prednisone and others.

This list is not complete and other drugs may interact with liotrix. Tell your doctor about all medications you use. This includes prescription, over-the-counter, vitamin, and herbal products. Do not start a new medication without telling your doctor.