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Liothyronine (lye oh THYE roe neen)

Adult Medication

Brand Names: U.S.

Cytomel; Triostat

Brand Names: Canada

Cytomel®

Warning

  • Do not use this drug to treat obesity or for weight loss. Very bad and sometimes deadly side effects may happen with this drug if it is taken in large doses or with other drugs for weight loss. Talk with your doctor.

What is this drug used for?

  • It is used to add thyroid hormone to the body.
  • It is used to treat or prevent an enlarged thyroid gland.
  • It is used to test for thyroid problems.

What do I need to tell my doctor BEFORE I take this drug?

  • If you have an allergy to liothyronine or any other part of this drug.
  • If you are allergic to any drugs like this one, any other drugs, foods, or other substances. Tell your doctor about the allergy and what signs you had, like rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.
  • If you have any of these health problems: Overactive thyroid gland or weak adrenal gland.
This is not a list of all drugs or health problems that interact with this drug.
Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take this drug with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.

What are some things I need to know or do while I take this drug?

  • Tell dentists, surgeons, and other doctors that you use this drug.
  • Do not run out of this drug.
  • If you have high blood sugar (diabetes), you will need to watch your blood sugar closely.
  • Have your blood work checked often. Talk with your doctor.
  • If you are 65 or older, use this drug with care. You could have more side effects.
  • Tell your doctor if you are pregnant or plan on getting pregnant. You will need to talk about the benefits and risks of using this drug while you are pregnant.
  • Tell your doctor if you are breast-feeding. You will need to talk about any risks to your baby.

What are some side effects that I need to call my doctor about right away?

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:
  • Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
  • Chest pain or pressure or a fast heartbeat.
  • A heartbeat that does not feel normal.
  • Headache.
  • Shortness of breath.
  • Feeling more or less hungry.
  • A big weight gain or loss.
  • Loose stools (diarrhea).
  • Throwing up.
  • Grouchy or touchy.
  • Very nervous and excitable.
  • Shakiness.
  • Not able to sleep.
  • Bothered by heat.
  • Sweating a lot.
  • Period (menstrual) changes. These include spotting between cycles or very light periods.

What are some other side effects of this drug?

All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:

Children:

  • Hair loss may happen in some people in the first few months of using this drug. This most often goes back to normal.

Shot:

  • Irritation where the shot is given.
These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.
You may report side effects to your national health agency.

How is this drug best taken?

Use this drug as ordered by your doctor. Read and follow the dosing on the label closely.

Tablet:

  • Take this drug at the same time of day.
  • Do not take colestipol or cholestyramine within 4 hours of this drug.
  • It may take several weeks to see the full effects.
  • Take as you have been told, even if you feel well.

Shot:

  • It is given as a shot into a vein.

What do I do if I miss a dose?

Tablet:

  • Take a missed dose as soon as you think about it.
  • If it is close to the time for your next dose, skip the missed dose and go back to your normal time.
  • Do not take 2 doses at the same time or extra doses.

Shot:

  • Call the doctor to find out what to do.

How do I store and/or throw out this drug?

Tablet:

  • Store at room temperature.
  • Store in a dry place. Do not store in a bathroom.
  • Protect from light.

Shot:

  • The shot will be given to you in a hospital or doctor’s office. You will not store it at home.

All products:

  • Keep all drugs out of the reach of children and pets.
  • Check with your pharmacist about how to throw out unused drugs.

General drug facts

  • If your symptoms or health problems do not get better or if they become worse, call your doctor.
  • Do not share your drugs with others and do not take anyone else’s drugs.
  • Keep a list of all your drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your doctor.
  • Talk with the doctor before starting any new drug, including prescription or OTC, natural products, or vitamins.
  • Some drugs may have another patient information leaflet. If you have any questions about this drug, please talk with your doctor, pharmacist, or other health care provider.
  • If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

Consumer Information Use and Disclaimer

This information should not be used to decide whether or not to take this medicine or any other medicine. Only the healthcare provider has the knowledge and training to decide which medicines are right for a specific patient. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about this medicine. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to this medicine. This information is not specific medical advice and does not replace information you receive from the healthcare provider. You must talk with the healthcare provider for complete information about the risks and benefits of using this medicine.

Last Reviewed Date

2014-09-25

Copyright

Copyright © 2014 Clinical Drug Information, LLC and Lexi-Comp, Inc.