Levothyroxinedrug info
levothyroxine sodium 0.075 MG Oral Tablet
What it is used for
Levothyroxine Sodium Tablets are L-thyroxine (T4) indicated for:
Hypothyroidism: As replacement therapy in primary (thyroidal), secondary (pituitary), and tertiary (hypothalamic) congenital or acquired hypothyroidism.
Pituitary Thyrotropin (Thyroid-Stimulating Hormone, TSH) Suppression: As an adjunct to surgery and radioiodine therapy in the management of thyrotropin-dependent well-differentiated thyroid cancer. Limitations of Use: - Not indicated for suppression of benign thyroid nodules and nontoxic diffuse goiter in iodine-sufficient patients. - Not indicated for treatment of hypothyroidism during the recovery phase of subacute thyroiditis. Hypothyroidism Levothyroxine Sodium Tablets are indicated as a replacement therapy in primary (thyroidal), secondary (pituitary), and tertiary (hypothalamic) congenital or acquired hypothyroidism. Pituitary Thyrotropin (Thyroid-Stimulating Hormone, TSH) Suppression Levothyroxine Sodium Tablets are indicated as an adjunct to surgery and radioiodine therapy in the management of thyrotropin-dependent well-differentiated thyroid cancer. Limitations of Use:
Levothyroxine Sodium Tablets are not indicated for suppression of benign thyroid nodules and nontoxic diffuse goiter in iodine-sufficient patients as there are no clinical benefits and overtreatment with Levothyroxine Sodium Tablets may induce hyperthyroidism.
Levothyroxine Sodium Tablets are not indicated for treatment of hypothyroidism during the recovery phase of subacute thyroiditis.
Text above is quoted in full from the FDA-approved drug label published by openFDA, effective October 1, 2025. Matched to this product by RxNorm code. Cross-references to other sections of the full prescribing information have been removed, since they point to a document not shown here. Nothing else is changed: no sentence is shortened, reworded or summarised.
Description
Levothyroxine Sodium Tablets contain the active ingredient, levothyroxine, a synthetic crystalline L-3,3',5,5'- tetraiodothyronine in sodium salt form. Synthetic T4 is identical in chemical structure to the T 4 produced in the human thyroid gland. Levothyroxine (T4) sodium has an empirical formula of C 15 H 10 I 4 NNaO 4 ∙ x H 2 O (where x = 5), molecular weight of 798.86 g/mol (anhydrous), and structural formula as shown: Levothyroxine Sodium Tablets for oral administration are available in the following strengths: 25 mcg, 50 mcg, 75 mcg, 88 mcg, 100 mcg, 112 mcg, 125 mcg, 137 mcg, 150 mcg, 175 mcg, 200 mcg, and 300 mcg. Each levothyroxine sodium tablet contains the inactive ingredients butylatedhydroxy toluene, calcium phosphate dibasic dihydrate, magnesium stearate, microcrystalline cellulose, povidone, sodium starch glycolate, and color additive(s). Table 6 provides a listing of the color additives by tablet strength: Table 6. Levothyroxine Sodium Tablets Color Additives Strength (mcg) Color additive(s) 25 FD&C Yellow No. 6 Aluminum Lake Note – FD&C Yellow No. 6 is orange in color. 50 None 75 FD&C Red No. 40 Aluminum Lake, FD&C Blue No. 2 Aluminum Lake 88 FD&C Blue No. 1 Aluminum Lake, FD&C Yellow No. 6 Aluminum Lake*, D&C Yellow No. 10 Aluminum Lake 100 D&C Yellow No. 10 Aluminum Lake, FD&C Yellow No. 6 Aluminum Lake* 112 D&C Red No. 27 & 30 Aluminum Lake 125 FD&C Yellow No. 6 Aluminum Lake*, FD&C Red No. 40 Aluminum Lake, FD&C Blue No. 1 Aluminum Lake 137 FD&C Blue No. 1 Aluminum Lake 150 FD&C Blue No. 2 Aluminum Lake 175 FD&C Blue No. 1 Aluminum Lake, D&C Red No. 27 & 30 Aluminum Lake 200 FD&C Red No. 40 Aluminum Lake 300 D&C Yellow No. 10 Aluminum Lake, FD&C Yellow No. 6 Aluminum Lake*, FD&C Blue No. 1 Aluminum Lake levothyroxine-structure
Text above is quoted in full from the FDA-approved drug label published by openFDA, effective October 1, 2025. Matched to this product by RxNorm code. Cross-references to other sections of the full prescribing information have been removed, since they point to a document not shown here. Nothing else is changed: no sentence is shortened, reworded or summarised.
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