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Pharma Intelligence, Simplified

Data updated: Mar 10, 2026

TIROSINT

LEVOTHYROXINE SODIUM
Oncology Approved 2006-10-13
1
Indication
--
Phase 3 Trials
19
Years on Market

Details

Status
Prescription
First Approved
2006-10-13
Routes
ORAL
Dosage Forms
CAPSULE

Companies

Active Ingredient: LEVOTHYROXINE SODIUM

TIROSINT Approval History

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What TIROSINT Treats

2 indications

TIROSINT is approved for 2 conditions since its original approval in 2006. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Hypothyroidism
  • Thyroid Cancer
Source: FDA Label

TIROSINT Boxed Warning

NOT FOR TREATMENT OF OBESITY or FOR WEIGHT LOSS Thyroid hormones, including TIROSINT, either alone or with other therapeutic agents, should not be used for the treatment of obesity or for weight loss. 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 an...

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Trial Timeline

Full development history with FDA approval milestones

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Understanding FDA Approval Types
Count Type What it means
- ORIG Original approval - drug first enters market
- SUPPL - Efficacy New indication (new disease/condition approved)
- SUPPL - Labeling Label text changes (warnings, dosing updates)
- SUPPL - Manufacturing Production changes (new facility)
- SUPPL - Chemistry Formulation changes (new dosage strength)

Green lines in the timeline show ORIG and Efficacy approvals - the clinically meaningful milestones.

TIROSINT FDA Label Details

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Indications & Usage

FDA Label (PDF)

TIROSINT is L-thyroxine (T4) indicated for adults and pediatric patients 6 years and older with: 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 ...

โš ๏ธ BOXED WARNING

WARNING: NOT FOR TREATMENT OF OBESITY or FOR WEIGHT LOSS Thyroid hormones, including TIROSINT, either alone or with other therapeutic agents, should not be used for the treatment of obesity or for weight loss. In euthyroid patients, doses within the range of daily hormonal requirements are ineffecti...

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Data Sources

Data sourced from official FDA and NIH databases. Click links to verify on original sources.