LEVOXYL® What is LEVOXYL?

(levothyroxine sodium)

What is LEVOXYL?

LEVOXYL is a prescription medicine that contains a hormone called levothyroxine, which is similar to the hormone produced by your thyroid gland. LEVOXYL is used to treat children and adults:
  • to replace or give extra levothyroxine in people whose thyroid does not produce enough of this hormone.
  • who need surgery and radioiodine therapy to manage a type of thyroid cancer called well-differentiated thyroid cancer.
LEVOXYL should not be used to treat people who are recovering from swelling of the thyroid gland (thyroiditis) and whose bodies do not produce enough levothyroxine for a short time.Do not use LEVOXYL if your adrenal glands are not working well and you have not been treated for this problem.Before you take LEVOXYL, tell your healthcare provider about all of your medical conditions, including if you:
  • have or had heart problems.
  • have or had thyroid nodules.
  • have adrenal or pituitary gland problems.
  • have any food or drug allergies.
  • have a low red blood cell count (anemia).
  • have diabetes.
  • have weak bones (osteoporosis).
  • have or had a history of blood clotting problems.
  • have recently received radiation therapy with iodine (such as I-131).
  • are pregnant or plan to become pregnant. Your healthcare provider may need to increase your LEVOXYL while you are pregnant.
Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins and herbal supplements. LEVOXYL may affect the way other medicines work, and other medicines may affect how LEVOXYL works. You can ask your healthcare provider or pharmacist for a list of medicines that interact with LEVOXYL.Tell every healthcare provider including your dentist who treats you that you are taking LEVOXYL before any surgery.

Find LEVOXYL® medical information:

Find LEVOXYL® medical information:

Our scientific content is evidence-based, scientifically balanced and non-promotional. It undergoes rigorous internal medical review and is updated regularly to reflect new information.

LEVOXYL® Quick Finder

Medication Guide

Health Professional Information

What is LEVOXYL?

What is LEVOXYL?

LEVOXYL is a prescription medicine that contains a hormone called levothyroxine, which is similar to the hormone produced by your thyroid gland. LEVOXYL is used to treat children and adults:
  • to replace or give extra levothyroxine in people whose thyroid does not produce enough of this hormone.
  • who need surgery and radioiodine therapy to manage a type of thyroid cancer called well-differentiated thyroid cancer.
LEVOXYL should not be used to treat people who are recovering from swelling of the thyroid gland (thyroiditis) and whose bodies do not produce enough levothyroxine for a short time.Do not use LEVOXYL if your adrenal glands are not working well and you have not been treated for this problem.Before you take LEVOXYL, tell your healthcare provider about all of your medical conditions, including if you:
  • have or had heart problems.
  • have or had thyroid nodules.
  • have adrenal or pituitary gland problems.
  • have any food or drug allergies.
  • have a low red blood cell count (anemia).
  • have diabetes.
  • have weak bones (osteoporosis).
  • have or had a history of blood clotting problems.
  • have recently received radiation therapy with iodine (such as I-131).
  • are pregnant or plan to become pregnant. Your healthcare provider may need to increase your LEVOXYL while you are pregnant.
Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins and herbal supplements. LEVOXYL may affect the way other medicines work, and other medicines may affect how LEVOXYL works. You can ask your healthcare provider or pharmacist for a list of medicines that interact with LEVOXYL.Tell every healthcare provider including your dentist who treats you that you are taking LEVOXYL before any surgery.
Prescribing Information
Download Prescribing Information

Health Professional Information

What is LEVOXYL?

What is LEVOXYL?

LEVOXYL is a prescription medicine that contains a hormone called levothyroxine, which is similar to the hormone produced by your thyroid gland. LEVOXYL is used to treat children and adults:
  • to replace or give extra levothyroxine in people whose thyroid does not produce enough of this hormone.
  • who need surgery and radioiodine therapy to manage a type of thyroid cancer called well-differentiated thyroid cancer.
LEVOXYL should not be used to treat people who are recovering from swelling of the thyroid gland (thyroiditis) and whose bodies do not produce enough levothyroxine for a short time.Do not use LEVOXYL if your adrenal glands are not working well and you have not been treated for this problem.Before you take LEVOXYL, tell your healthcare provider about all of your medical conditions, including if you:
  • have or had heart problems.
  • have or had thyroid nodules.
  • have adrenal or pituitary gland problems.
  • have any food or drug allergies.
  • have a low red blood cell count (anemia).
  • have diabetes.
  • have weak bones (osteoporosis).
  • have or had a history of blood clotting problems.
  • have recently received radiation therapy with iodine (such as I-131).
  • are pregnant or plan to become pregnant. Your healthcare provider may need to increase your LEVOXYL while you are pregnant.
Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins and herbal supplements. LEVOXYL may affect the way other medicines work, and other medicines may affect how LEVOXYL works. You can ask your healthcare provider or pharmacist for a list of medicines that interact with LEVOXYL.Tell every healthcare provider including your dentist who treats you that you are taking LEVOXYL before any surgery.

Resources

Didn’t find what you were looking for? Contact us.

MI Digital Assistant

Chat online with Pfizer Medical Information regarding your inquiry on a Pfizer medicine.

Call 800-438-1985*

*Contact Medical Information.9AM-5PM ET Monday to Friday; excluding holidays.

Report Adverse Event

Pfizer Safety

To report an adverse event related to the Pfizer-BioNTech COVID-19 Vaccine, and you are not part of a clinical trial* for this product, click the link below to submit your information:

Pfizer Safety Reporting Site

*If you are involved in a clinical trial for this product, adverse events should be reported to your coordinating study site.

If you cannot use the above website, or would like to report an adverse event related to a different Pfizer product, please call Pfizer Safety at (800) 438-1985.

FDA Medwatch

You may also contact the U.S. Food and Drug Administration (FDA) directly to report adverse events or product quality concerns either online at www.fda.gov/medwatch or call (800) 822-7967.