Liothyronine

Liothyronine is used for:

Treating low thyroid function. It is also used to treat or prevent different types of goiters, as an aid to diagnose certain thyroid conditions, or to treat patients who are allergic to other thyroid medicines. It may also be used for other conditions as determined by your doctor.

Liothyronine is a thyroid hormone. It works by replacing or supplementing the natural thyroid hormones in the body.

Do NOT use Liothyronine if:

• you are allergic to any ingredient in Liothyronine
• you have had or are having a heart attack or you have untreated thyrotoxicosis (a condition characterized by chest pain, increased heartbeat, pounding in the chest, excessive sweating, heat intolerance, and nervousness)
• you have certain uncorrected adrenal gland problems

Contact your doctor or health care provider right away if any of these apply to you.

Before using Liothyronine:

Some medical conditions may interact with Liothyronine. Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:

• if you are pregnant, planning to become pregnant, or are breast-feeding
• if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement
• if you have allergies to medicines, foods, or other substances
• if you are planning to have surgery
• if you are taking blood thinners
• if you have heart disease, angina or chest pain, high blood pressure, diabetes, an overactive thyroid, a long-standing condition of underactive thyroid, or myxedema (a condition characterized by chest pain, increased heart rate, pounding in the chest, excessive sweating, heat intolerance, and nervousness)

Some MEDICINES MAY INTERACT with Liothyronine. Tell your health care provider if you are taking any other medicines, especially any of the following:

• Estrogen or birth control pills because they may decrease Liothyronine's effectiveness
• Anticoagulants (eg, warfarin), digitalis glycosides (eg, digoxin), ketamine, tricyclic antidepressants (eg, amitriptyline), or vasopressors (eg, norepinephrine) because the risk of their side effects may be increased by Liothyronine
• Insulin or any other medicine for diabetes (eg, glyburide) because their effectiveness may be decreased by Liothyronine

This may not be a complete list of all interactions that may occur. Ask your health care provider if Liothyronine may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.