FDA label

What is Levoxyl used for?

Levoxyl contains levothyroxine. The FDA-approved uses below are quoted from the Indications and Usage section of its DailyMed label.

Source: DailyMed SPL label file dated 2026-10-23. Publisher page

The FDA label says: “Hypothyroidism”

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Levoxyl, tablet

Indications and Usage, quoted from the label by Pfizer Laboratories Div Pfizer Inc (NDA021301). Cross-references to other label sections are left out.

Hypothyroidism
LEVOXYL is indicated in pediatric and adult patients as a replacement therapy in primary (thyroidal), secondary (pituitary), and tertiary (hypothalamic) congenital or acquired hypothyroidism.
Pituitary Thyrotropin (Thyroid-Stimulating Hormone, TSH) Suppression
LEVOXYL is indicated in pediatric and adult patients as an adjunct to surgery and radioiodine therapy in the management of well-differentiated thyroid cancer.
Limitations of Use:
LEVOXYL is 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 LEVOXYL may induce hyperthyroidism.
LEVOXYL is not indicated for treatment of hypothyroidism during the recovery phase of subacute thyroiditis.

Source: DailyMed label, set id 758588c3-c63e-491b-0aa2-4f50d80cb174, version 12, effective December 15, 2020. NDC 60793-850, one of 11 listings for this product.