Skip to Content

Thyroid desiccated Pregnancy and Breastfeeding Warnings

Thyroid desiccated is also known as: Armour Thyroid, Bio-Throid, NP Thyroid, Nature-Throid, Thyroid Porcine, WP Thyroid, Westhroid

Thyroid desiccated Pregnancy Warnings

Animal studies have not been reported. Thyroid hormones do not readily cross the placenta. Clinical experience to date does not indicate any adverse effects on the fetus when thyroid hormones are administered to pregnant women. There are no controlled data in human pregnancy. US FDA pregnancy category A: Adequate and well-controlled studies have failed to demonstrate a risk to the fetus in the first trimester of pregnancy (and there is no evidence of risk in later trimesters).

Use is considered acceptable. US FDA pregnancy category: A

See references

Thyroid desiccated Breastfeeding Warnings

Caution is recommended. Excreted into human milk: Yes Comments: -Liothyronine (T3) and levothyroxine (T4) are normal components of human milk; if replacement doses are required by the mother, it is not necessarily a reason to discontinue breastfeeding. -Dose requirements may be increased in the postpartum period compared to pre-pregnancy requirements in women with Hashimoto's thyroiditis.

See references

References for pregnancy information

  1. "Product Information. Armour thyroid (thyroid desiccated)." Forest Pharmaceuticals, St. Louis, MO.

References for breastfeeding information

  1. United States National Library of Medicine "Toxnet. Toxicology Data Network. Available from: URL:" ([cited 2013 -]):
  2. "Product Information. Armour thyroid (thyroid desiccated)." Forest Pharmaceuticals, St. Louis, MO.

Disclaimer: Every effort has been made to ensure that the information provided by Cerner Multum, Wolters Kluwer Health and is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This drug information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate that the drug or combination is safe, effective, or appropriate for any given patient. Multum Information Services, Inc. does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. Copyright 2000-2008 Multum Information Services, Inc. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, check with your doctor, nurse, or pharmacist.