Skip to main content

Bio-Throid

Generic name: thyroid (THYE-royd)
Brand name: Examples include Armour Thyroid and Bio-Throid

Do not use Bio-Throid alone or with other medicines to treat obesity or to lose weight. Incorrect use of Bio-Throid may cause serious and sometimes life-threatening side effects.


Bio-Throid is used for:

Treating underactive thyroid. It is also used to treat or prevent certain types of goiters and to manage thyroid cancer. It may also be used for other conditions as determined by your doctor.

Bio-Throid is a thyroid hormone. It works by replacing thyroid hormone when your body does not make enough on its own.

Do NOT use Bio-Throid if:

Contact your doctor or health care provider right away if any of these apply to you.

Before using Bio-Throid:

Some medical conditions may interact with Bio-Throid. Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:

Some MEDICINES MAY INTERACT with Bio-Throid. Tell your health care provider if you are taking any other medicines, especially any of the following:

This may not be a complete list of all interactions that may occur. Ask your health care provider if Bio-Throid may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.

How to use Bio-Throid:

Use Bio-Throid as directed by your doctor. Check the label on the medicine for exact dosing instructions.

Ask your health care provider any questions you may have about how to use Bio-Throid.

Important safety information:

Possible side effects of Bio-Throid:

All medicines may cause side effects, but many people have no, or minor, side effects. When used in small doses, no COMMON side effects have been reported with this product. Seek medical attention right away if any of these SEVERE side effects occur:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); changes in appetite; changes in menstrual periods; chest pain; diarrhea or increased bowel movements; excessive sweating; fainting; fast or irregular heartbeat; inability to tolerate warm or hot temperatures; nervousness; tremor; trouble sleeping; unexplained weight loss; unusual weakness.

This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. To report side effects to the appropriate agency, please read the Guide to Reporting Problems to FDA.

If OVERDOSE is suspected:

Contact 1-800-222-1222 (the American Association of Poison Control Centers), your local poison control center, or emergency room immediately.

Proper storage of Bio-Throid:

Store Bio-Throid at room temperature, between 59 and 86 degrees F (15 and 30 degrees C). Store away from heat, moisture, and light. Do not store in the bathroom. Keep Bio-Throid out of the reach of children and away from pets.

General information:

This information should not be used to decide whether or not to take Bio-Throid or any other medicine. Only your health care provider has the knowledge and training to decide which medicines are right for you. 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 Bio-Throid. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to Bio-Throid. This information is not specific medical advice and does not replace information you receive from your health care provider. You must talk with your healthcare provider for complete information about the risks and benefits of using Bio-Throid.

Issue Date: June 3, 2015

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.