Nature-Throid NT-1 (Oral)

Thyroid is used to treat hypothyroidism, which is when the thyroid gland does not make enough thyroid hormone. It is also used to help reduce the size of enlarged thyroid glands (called goiter) and to treat thyroid cancer.

Thyroid is also used in some medical tests to help find issues with the thyroid gland.

This medicine is available only with your doctor's prescription.

It is very important that your doctor checks the progress of you or your child at regular visits. This will help your doctor see if the medicine is working properly and decide if you should continue taking it. Blood tests will be needed to check for unwanted effects.

Thyroid should not be used to treat obesity or for losing weight. This medicine does not help with weight loss, and taking larger amounts may cause more serious medical conditions.

Hypothyroidism can sometimes cause infertility in both men and women. Thyroid should not be used to treat infertility unless it is caused by hypothyroidism.

Call your doctor right away if you start to have chest pain, a fast, irregular, pounding, or racing heartbeat or pulse, excessive sweating, heat intolerance, nervousness, or any other unusual medical condition.

For patients with diabetes: It is very important that you monitor your blood or urine sugar levels as instructed by your doctor. Check with your doctor immediately if you notice any changes in your sugar levels.

A temporary loss of hair may happen during the first few months of thyroid therapy. Ask your doctor about this if you have any concerns.

Do not suddenly stop taking this medicine without first checking with your doctor. Your doctor may want you or your child to gradually reduce the amount you are using before stopping completely.

Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements.

In deciding to use a medicine, you and your doctor need to think about the risks and benefits of the medicine. Here are some important things to consider:

Allergies

Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also, inform your health care professional about any other allergies you may have, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.

Pediatric

Current studies have not shown any specific problems in children that would limit the use of thyroid.

Geriatric

Current studies have not shown any specific problems in the elderly that would limit the use of thyroid. However, older adults are more likely to have heart and blood vessel problems related to aging, which may require caution when using thyroid.

Breast Feeding

There are no adequate studies in women to determine the risk to infants when using this medication while breastfeeding. Consider the potential benefits and risks before taking this medication during breastfeeding.

Interactions with Medicines

Some medicines should not be used together at all, while others can be used together even if there is a chance of interaction. In these cases, your doctor may need to adjust the dose or take other precautions. It is very important that your healthcare professional knows if you are taking any of the medicines listed below. The following interactions are based on their potential significance and are not necessarily all-inclusive.

Using this medicine with any of the following medicines is usually not recommended, but may be necessary in some cases. If both are prescribed together, your doctor may adjust the dose or frequency of one or both medicines.

• Midodrine

Using this medicine with any of the following medicines may increase the risk of certain side effects, but using both may be the best treatment for you. If both are prescribed together, your doctor may change the dose or frequency of one or both medicines.

• Kelp

Interactions with Food/Tobacco/Alcohol

Some medicines should not be used around mealtime or with certain types of food because interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions. Discuss with your healthcare professional how to use your medicine with food, alcohol, or tobacco.

Other Medical Problems

Having other medical problems may affect the use of this medicine. Make sure to tell your doctor if you have any other medical issues, especially:

• Untreated adrenal insufficiency or
• Untreated thyrotoxicosis (overactive thyroid)—This medicine should not be used in these conditions.

• Adrenal gland problems or
• Angina or
• Blood clotting problems or
• Diabetes or
• Heart or blood vessel disease (e.g., coronary artery disease)—Use with caution, as it may worsen these conditions.

Along with its necessary effects, a medicine may cause some unwanted effects. Not all of these side effects may happen, but if they do, you may need medical attention.

Get emergency help right away if any of these overdose symptoms occur:

• Changes in appetite
• Changes in menstrual periods
• Chest pain
• Diarrhea
• Fast or irregular heartbeat
• Fever
• Hand tremors
• Headache
• Irritability
• Leg cramps
• Nervousness
• Sensitivity to heat
• Sweating
• Trouble breathing
• Trouble sleeping
• Vomiting
• Weight loss

Other side effects not listed may also happen in some patients. If you notice any other effects, talk to your healthcare professional.

Call your doctor for medical advice about side effects. You can report side effects to the FDA at 1-800-FDA-1088.

In the U.S.

• Armour Thyroid
• Nature-Throid NT-1
• Nature-Throid NT-1/2
• Nature-Throid NT-2
• Nature-Throid NT-3
• Nature-Thyroid
• Westhroid

Available Dosage Forms:

• Tablet

Therapeutic Class: Thyroid Supplement

This medicine will need to be taken for the rest of your life or your child's life. Do not stop taking this medicine or change your dose without first checking with your doctor.

If you are taking cholestyramine (Questran®), take it at least 4 hours before or 4 hours after you take this medicine.

Dosing

The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.

The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.

• For oral dosage form (tablet):For hypothyroidism and thyroid cancer: Adults—At first, 30 milligrams (mg) once a day. Then, your doctor may increase your dose a little at a time up to the usual maintenance dose of 60 to 120 mg a day. A lower starting dose of 15 mg per day may be given to patients for certain conditions. Your doctor may adjust your dose as needed or tolerated. Children older than 12 years of age—Dose is based on body weight and must be determined by your doctor. The dose is usually more than 90 mg per day. Your doctor may adjust your dose as needed or tolerated. Children 6 to 12 years of age—Dose is based on body weight and must be determined by your doctor. The dose is usually 60 to 90 mg per day. Your doctor may adjust your dose as needed or tolerated. Children 1 to 5 years of age—Dose is based on body weight and must be determined by your doctor. The dose is usually 45 to 60 mg per day. Your doctor may adjust your dose as needed or tolerated. Children 6 to 12 months of age—Dose is based on body weight and must be determined by your doctor. The dose is usually 30 to 45 mg per day. Your doctor may adjust your dose as needed or tolerated. Children 0 to 6 months of age—Dose is based on body weight and must be determined by your doctor. The dose is usually 15 to 30 mg per day. Your doctor may adjust your dose as needed or tolerated.

Missed Dose

If you miss a dose of this medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses.

Storage

Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep from freezing.

Keep out of the reach of children.

Do not keep outdated medicine or medicine no longer needed.

Ask your healthcare professional how you should dispose of any medicine you do not use.