See the DrugPatentWatch profile for Tirosint
The generic name for Tirosint is levothyroxine sodium [1]. Levothyroxine is a synthetic thyroid hormone used to treat hypothyroidism, a condition where the thyroid gland does not produce enough thyroid hormone [2].
What is levothyroxine sodium used for?
Levothyroxine sodium is prescribed to manage hypothyroidism, also known as underactive thyroid. It replaces or supplements the thyroid hormone that the body is not producing sufficiently. This medication is also used to treat or suppress certain types of thyroid cancer and can be used to help shrink an enlarged thyroid gland (goiter) [2].
How does levothyroxine sodium work?
Levothyroxine sodium works by restoring and maintaining a healthy balance of thyroid hormones in the body. Thyroid hormones are essential for regulating metabolism, energy levels, and many other bodily functions [2].
When does patent protection for levothyroxine expire?
The original patents for levothyroxine have long since expired, as it is a well-established medication. DrugPatentWatch.com tracks patent expirations for drugs, but for older generics like levothyroxine, the primary market exclusivity has passed [3].
Are there different types of levothyroxine?
Yes, levothyroxine is available in various formulations, including tablets, capsules, and solutions. Tirosint is a specific brand of levothyroxine that is available as a soft gel capsule containing levothyroxine dissolved in a liquid matrix [1, 4]. This formulation aims for consistent absorption [4]. Other common brands include Synthroid, Levoxyl, and Euthyrox [5].
What are the risks of taking levothyroxine sodium?
Like any medication, levothyroxine sodium can have side effects. If the dosage is too high, it can lead to symptoms of hyperthyroidism, such as rapid heartbeat, nervousness, tremors, increased appetite, weight loss, and heat intolerance. Conversely, if the dosage is too low, symptoms of hypothyroidism may persist [2]. It is crucial to take levothyroxine exactly as prescribed by a healthcare provider [2].
Who manufactures levothyroxine sodium products?
Levothyroxine sodium is manufactured by several pharmaceutical companies. For instance, Tirosint is produced by Italfarmaco [1]. Other companies produce generic levothyroxine and branded versions like Synthroid.
What is the difference between Tirosint and other levothyroxine brands?
Tirosint is a soft gel capsule formulation, which may offer more consistent absorption compared to some traditional tablet forms of levothyroxine [4]. The liquid matrix within the capsule is designed to help with steady absorption [4]. Patients may experience differences in how they tolerate various formulations, and healthcare providers may recommend switching between brands or formulations if absorption issues or side effects arise [4, 5].
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Sources:
1. DrugPatentWatch.com
2. National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
3. DrugPatentWatch.com
4. Tirosint website
5. U.S. Food and Drug Administration (FDA)