Tiratricol (also known as TRIAC or triiodothyroacetic acid) is a

thyroid hormone File:Thyroid_system.svg, upright=1.5, The thyroid system of the thyroid hormones T3 and T4 rect 376 268 820 433 Thyroid-stimulating hormone rect 411 200 849 266 Thyrotropin-releasing hormone rect 297 168 502 200 Hypothalamus rect 66 216 386 25 ...

analogue. Triiodothyroacetic acid is also a physiologic

that is present in the normal organism in low concentrations.

Uses

It is indicated in the management of

thyroid hormone resistance syndrome Thyroid hormone resistance (also resistance to thyroid hormone (RTH), and sometimes Refetoff syndrome) describes a rare syndrome in which the thyroid hormone levels are elevated but the thyroid stimulating hormone (TSH) level is not suppressed, o ...

and is used, in combination with levothyroxine, to suppress thyroid-stimulating hormone production in patients with thyroid cancer. It has been investigated for use in reducing goiter. It has also shown some effectiveness in reducing the atrophy caused when using

corticosteroid Corticosteroids are a class of steroid hormones that are produced in the adrenal cortex of vertebrates, as well as the synthetic analogues of these hormones. Two main classes of corticosteroids, glucocorticoids and mineralocorticoids, are involv ...

s. Tiratricol has also been widely marketed, under various trade names, as a weight loss aid. In 1999 and 2000, the United States Food and Drug Administration and

Health Canada Health Canada (HC; french: Santé Canada, SC)Health Canada is the applied title under the Federal Identity Program; the legal title is Department of Health (). is the Structure of the Canadian federal government#Departments, with subsidiary unit ...

both issued warnings to the public regarding the use of

dietary supplement A dietary supplement is a manufactured product intended to supplement one's diet by taking a pill, capsule, tablet, powder, or liquid. A supplement can provide nutrients either extracted from food sources or that are synthetic in order ...

s containing tiratricol.

Legal status

Tiratricol is not approved for sale in Canada or the United States. It was once an approved drug in Brazil, but its marketing authorization was suspended in 2003, effectively prohibiting its sale. Tiratricol is still available in France for therapy of thyroid hormone resistance and adjuvant therapy of thyroid cancer.Laboratoires DB PHARMA
Teatrois
information It is available as an

orphan drug An orphan drug is a pharmaceutical agent developed to treat medical conditions which, because they are so rare, would not be profitable to produce without government assistance. The conditions are referred to as orphan diseases. The assignment of ...

to be prescribed by registered specialists in Europe.

References

External links

* Orphan drugs Iodoarenes Phenols Phenol ethers Thyroid hormone receptor agonists {{dermatologic-drug-stub