Endocrine System Home > Armour Thyroid and Pregnancy

In studies on Armour Thyroid (thyroid USP) and pregnancy, the drug did not appear to cause any problems to the fetus. As a matter of fact, this is considered one of the safest drugs to use during pregnancy. If you are taking Armour Thyroid and pregnancy occurs, your healthcare provider will probably need to increase your dosage and will continue to do so throughout the pregnancy.

Armour Thyroid and Pregnancy: An Overview

Armour® Thyroid (thyroid USP) is a prescription medication used to treat hypothyroidism (an underactive thyroid) and various other thyroid problems. The medication is safe for use during pregnancy. In fact, not taking Armour Thyroid during pregnancy if you need to take it can be quite dangerous.

Armour Thyroid and Pregnancy Category A

Thyroid hormone medications such as Armour Thyroid are considered pregnancy Category A medications. Pregnancy Category A is given to medicines that have been extensively studied in pregnant humans and that do not appear to cause any harm to the fetus. Very few medications have been given this classification; it is an excellent indication that a medication is safe for use during pregnancy. You can feel confident that Armour Thyroid is one of the safest medications for use in pregnancy, when used appropriately.
Because hypothyroidism can cause serious problems, such as miscarriages, it is important to treat an underactive thyroid during pregnancy. If you are already taking Armour Thyroid, it is likely that your dose may need to be increased throughout your pregnancy. In fact, your dose may need to be increased as early as four weeks into your pregnancy. Your healthcare provider should monitor you closely and adjust your Armour Thyroid dosage as necessary.

Armour Thyroid and Pregnancy: Final Thoughts

If you are taking Armour Thyroid and pregnancy occurs, or if you are thinking about becoming pregnant while taking the drug, let your healthcare provider know as soon as possible. He or she will need to monitor you more closely, as pregnant women often need higher doses of Armour Thyroid. You can be assured that this medication is safe for use during pregnancy.
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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