Armour Thyroid is a natural, porcine-derived thyroid hormone replacement containing both
and T3. Armour Thyroid Tablets, USP, contain the labeled amounts of levothyroxine (T4)
liothyronine (T3), as established by the United States Pharmacopeia (USP).
Armour Thyroid tablets are indicated:
- As replacement or supplemental therapy in patients with hypothyroidism of any etiology,
except transient hypothyroidism during the recovery phase of subacute thyroiditis.
This category includes cretinism, myxedema, and ordinary hypothyroidism in patients
of any age (children, adults, the elderly), or state (including pregnancy); primary
hypothyroidism resulting from functional deficiency, primary atrophy, partial or
total absence of thyroid gland, or the effects of surgery, radiation, or drugs,
with or without the presence of goiter; and secondary (pituitary), or tertiary (hypothalamic)
- As pituitary TSH suppressants, in the treatment or prevention of various types of
euthyroid goiters, including thyroid nodules, subacute or chronic lymphocytic thyroiditis
(Hashimoto’s), multinodular goiter, and in the management of thyroid cancer.
Important Safety Information Thyroid hormone should be used with caution
in patients with angina pectoris or the elderly, in whom there is a greater likelihood
of occult cardiac disease. In these patients, therapy should be initiated with low
doses, i.e., 15-30 mg Armour Thyroid. The development of chest pain or other exacerbation
of cardiovascular symptoms will require a decrease in dosage. Thyroid hormone may
increase symptoms of diabetes mellitus, diabetes insipidus, or cortical insufficiency.
Appropriate adjustments of the various therapeutic measures directed at these concomitant
endocrine diseases are required. Dosages of oral anticoagulants should be adjusted
in thyroid-treated patients on the basis of frequent prothrombin time determinations.
Caution should be used in infants where excessive doses of thyroid hormone preparations
may produce craniosynostosis.