What is Armour Thyroid: Uses, Warnings & Interactions

Follow the prescriber’s instructions.

Take the tablets at the same time every day.

Take Armour Thyroid doses on an empty stomach 30–60 minutes before eating food.

Swallow the tablet with a drink of water.

The tablet may smell bad. That’s normal and does not indicate spoilage.

Store Armour Thyroid tablets in a tightly closed container at room temperature. Protect this medicine from heat and light.

Take the missed dose as soon as possible.

Skip the missed dose if it is almost time for your next regular dose.

Take the next dose at its regular time.

Do not take two doses at the same time.

You should not use this medicine if you have had an allergic reaction to any type of thyroid hormone or if you have:

• Dangerously high thyroid hormone levels (thyrotoxicosis)

• Adrenal gland insufficiency

Tell all other doctors or healthcare providers treating you that you are taking this medication.

Thyroid hormone treatment requires regular blood tests to make sure the dose is correct. Keep all appointments.

Before taking this medication, tell the prescriber if you are pregnant, breastfeeding, or have: 

• Heart problems

• Coronary artery disease

• Chest pain (angina)

• Diabetes

• Adrenal gland problems

Do not stop taking this medicine without first talking with the prescriber. Thyroid hormone replacement is typically a lifelong therapy.

Tell the prescriber about all the prescription medications, over-the-counter drugs, and supplements you take, particularly:

• Blood thinners

• Diabetes medications

• Insulin

• Birth control pills

• Estrogen replacement treatments

If you are taking cholestyramine or colestipol, take the dose either four hours before or four hours after taking the Armour Thyroid dose.

Stop taking any vitamins or supplements that contain biotin (vitamin B7) at least two days before any thyroid hormone blood test.

Tell other healthcare professionals you are taking Armour Thyroid before they prescribe new medications.