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2. Desiccated thyroid extract - Wikipedia

   en.wikipedia.org/wiki/Desiccated_thyroid_extract

   Desiccated Thyroid became a commercial treatment option in 1934 with Westhroid, [citation needed]. In the early 1960s, desiccated thyroid hormones (thyroid extract) began to be replaced by levothyroxine (synthetic T4), or by combinations of T4 and T3. Replacement occurred faster in the United Kingdom than in North America, but by the 1980s more ...

3. Levothyroxine - Wikipedia

   en.wikipedia.org/wiki/Levothyroxine

   Levothyroxine is a synthetic form of thyroxine (T 4), which is secreted by the thyroid gland. Levothyroxine and thyroxine are chemically identical: natural thyroxine is also in the "levo" chiral form, the difference is only in terminological preference. T 4 is biosynthesized from tyrosine. Approximately 5% of the US population suffers from over ...

4. Thyroxine - Wikipedia

   en.wikipedia.org/wiki/Thyroxine

   It is the primary form of thyroid hormone found in the blood and acts as a prohormone of the more active thyroid hormone, triiodothyronine (T 3). [1] Thyroxine and its active metabolites are essential for regulating metabolic rate , supporting heart and muscle function , promoting brain development , and maintaining bone health .

5. Common thyroid drug levothyroxine linked to bone mass loss - AOL

   www.aol.com/common-thyroid-drug-levothyroxine...

   Levothyroxine, a drug used to treat hypothyroidism, can lead to reduced bone mass and density in older adults with normal thyroid levels, a small cohort study has shown.

6. Thyroid hormones - Wikipedia

   en.wikipedia.org/wiki/Thyroid_hormones

   The thyroid system of the thyroid hormones T 3 and T 4 [1] Thyroid hormones are two hormones produced and released by the thyroid gland, triiodothyronine (T 3) and thyroxine (T 4). They are tyrosine-based hormones that are primarily responsible for regulation of metabolism. T 3 and T 4 are partially composed of iodine, derived from food. [2]

7. Antithyroid agent - Wikipedia

   en.wikipedia.org/wiki/Antithyroid_agent

   They inhibit release of thyroid hormones by the thyroid gland.The most studied drug in this class is lithium, which inhibits thyroid hormone secretion by inhibiting iodotyrosine coupling, thyroidal iodide uptake, and alteration in structure of thyroglobulin, [10] a protein which acts as a substrate for the synthesis of thyroid hormones and storage of inactive forms of T3, T4 and iodine within ...