NP Thyroid - Generic Armour Thyroid

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Common 30-Day Supply: 30

NP Thyroid, generic Armour Thyroid, may be prescribed to treat underactive thyroid and prevent an enlarged thyroid gland, known as goiter. It is a natural form of the hormones triiodothyronine (T3) and thyroxine (T4). T3 plays a central role in digestion, energy production, temperature regulation, heart rate, and brain development and function.

Prescription Product: We will ask for your prescription information after checkout.

Is Underactive Thyroid Treatable?

Underactive thyroid, or hypothyroidism, is common and in most cases treatable. 

NP Thyroid may be prescribed to replace low levels of triiodothyronine (T3) and thyroxine (T4). Other indications: manage thyroid cancer, thyroid nodules, prevent and treat goiter. It is not prescribed for temporary, or transient, hypothyroidism.

It is derived from desiccated porcine thyroid. It is considered a natural source of the hormone rather than synthetic, or "man-made."

Your doctor may also advise you to change your diet and suggest an exercise program to improve your thyroid function.

What Are T3 And T4?

T3 and T4 are hormones produced by the thyroid. T4 is a precursor to T3, which means that T3 is synthesized from T4.

Free T4 VS Bound T4

On its own T4 is inactive but it is essential for the production of T3. However, more than 90% of T4 produced by the thyroid becomes unusable because it attaches to proteins that prevent it from entering tissues.

The amount non-bound T4 is called free T4. It enters tissues and is then converted by cells into T3 to carry out physiological functions and maintain health.

What Are Symptoms Of Hypothyroidism?

  • Weight gain
  • Sluggishness
  • Constipation
  • Depression
  • Muscle cramps
  • Sensitivity to cold
  • Dry or itchy skin

What Causes Underactive Thyroid?

The most common cause of hypothyroidism is Hashimoto's thyroiditis. It is an autoimmune disease that causes the immune system to attack the thyroid gland and inhibit its production of T4 and T3.

Is Hypothyroidism More Common In Women Than Men?

Yes, women are more likely to have underactive thyroid than men.1 In fact, women are more likely than men to have any type of thyroid dysfunction.2

It is estimated that 20 million American have thyroid disorders and less than half are aware of their condition.3

People over the age of 60 are at higher risk for hypothyroidism and hyperthyroidism.1,2

What Is Goiter?

Goiter is an enlargement of the thyroid hormone. It may be caused by hypothyroidism, hyperthyroidism or lack of iodine in the diet. It may not impact thyroid function but can be uncomfortable or make it difficult to swallow. Goiters can be benign or cancerous.


1 Hypothyroidism | Hashimoto's Disease | MedlinePlus. Published 2020. Accessed July 20, 2020.

2 Hyperthyroidism |MedlinePlus. Published 2020. Accessed July 22, 2020.

3 https://www.Thyroid.Org/Media-Main/Press-Room/; 2020 Accessed July 22, 2020.

NP Thyroid® Indications

NP Thyroid may be prescribed to treat of a condition called hypothyroidism from any cause, except for cases of temporary hypothyroidism, which is usually associated with an inflammation of the thyroid (thyroiditis). It is meant to replace or supplement a hormone that is usually made by your thyroid gland.

NP Thyroid is also used in the treatment and prevention of normal functioning thyroid goiters, such as thyroid nodules, Hashimoto’s thyroiditis, multinodular goiter, and in the management of thyroid cancer.


  • NP Thyroid is contraindicated in patients with uncorrected adrenal insufficiency, untreated thyrotoxicosis, and hypersensitivity to any component of the product.
  • In the elderly and in patients with cardiovascular disease, NP Thyroid should be used with greater caution than younger patients or those without cardiovascular disease.
  • Use of NP Thyroid in patients with diabetes mellitus or adrenal cortical insufficiency may worsen the intensity of their symptoms.
  • The therapy of myxedema coma requires simultaneous administration of glucocorticoids.
  • Concomitant use of NP Thyroid with oral anticoagulants alters the sensitivity of oral anticoagulants. Prothrombin time should be closely monitored in thyroid-treated patients on oral anticoagulants.
  • In infants, excessive doses of NP Thyroid may produce craniosynostosis.
  • Partial loss of hair may be experienced by children in the first few months of therapy but is usually transient.
  • Adverse reactions associated with NP Thyroid therapy are primarily those of hyperthyroidism due to therapeutic overdosage.
  • Many drugs and some laboratory tests may alter the therapeutic response to NP Thyroid. In addition, thyroid hormones and thyroid status have varied effects on the pharmacokinetics and actions of other drugs. Administer at least 4 hours before or after drugs that are known to interfere with absorption. Evaluate the need for dose adjustments when regularly administering within one hour of certain foods that may affect absorption.
  • NP Thyroid should not be discontinued during pregnancy, and hypothyroidism diagnosed during pregnancy should be promptly treated.

Important Risk Information

Drugs with thyroid hormone activity, alone or together with other therapeutic agents, have been used for the treatment of obesity. In euthyroid patients, doses within the range of daily hormonal requirements are ineffective for weight reduction. Larger doses may produce serious or even life-threatening manifestations of toxicity, particularly when given in association with sympathomimetic amines such as those used for their anorectic effects.

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