Tirosint
Tirosint is a brand-name prescription medication containing levothyroxine sodium, a synthetic form of the thyroid hormone T4. It is used to treat hypothyroidism (underactive thyroid) and certain thyroid conditions, and is unique among levothyroxine products due to its soft gelatin capsule formulation with minimal inactive ingredients.
Tirosint is a prescription thyroid hormone replacement medication used to treat underactive thyroid conditions.
Key facts at a glance
- RxNorm
- 728656
- Generic
- Tirosint
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Treatment of hypothyroidism (underactive thyroid), including primary, secondary, and tertiary types; suppression of TSH in thyroid cancer and goiter management.
Provides synthetic levothyroxine (T4) to replace deficient endogenous thyroid hormone, which helps restore normal metabolic function, energy levels, and development.
Should be taken on an empty stomach, typically 30-60 minutes before breakfast. Contains fewer inactive ingredients than many other levothyroxine products, making it suitable for patients with sensitivities to dyes or other additives. Requires regular thyroid function monitoring. Do not use for weight loss. May interact with certain medications including calcium, iron, and antacids.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy