Skip to content
liotrix

Structure via PubChem · Public domain (PubChem)

EntityQ6556102· pop 8· linked from 57 articles

Also known as Thyrolar, Levothyroxine sodium - liothyronine sodium mixt, Liotrix (T4;T3)

Liotrix is a 4:1 mixture of thyroxine (T4) and triiodothyronine (T3) made synthetically. It is used to replenish thyroid hormones in thyroid deficiency and hypothyroidism. The only brand of liotrix available in the U.S. is Thyrolar, manufactured by Forest Laboratories.

Chemical data

Formula
C30H21I7N2Na2O8
Molecular weight
1471.8 g/mol
IUPAC name
disodium;(2S)-2-amino-3-[4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl]propanoate;(2S)-2-amino-3-[4-(4-hydroxy-3-iodophenoxy)-3,5-diiodophenyl]propanoate

via PubChem

~3 min read

Encyclopedic overview

4 sections
Contents
  • Indications
  • Adverse effects
  • Contraindications
  • References

Liotrix is a 4:1 mixture of thyroxine (T4) and triiodothyronine (T3) made synthetically. It is used to replenish thyroid hormones in thyroid deficiency and hypothyroidism. The only brand of liotrix available in the U.S. is Thyrolar, manufactured by Forest Laboratories.

Sometime prior to 2008 Forest Laboratories released the following statement regarding the limited availability of liotrix: "U.S. Pharmacopeia, an official public standards-setting authority for prescription and over-the-counter medicines and other health care products manufactured or sold in the United States, has mandated new specifications for a component used in the manufacturing of Thyrolar. As a result, all strengths of Thyrolar are currently on long-term back order while modifications necessary to meet these new specifications are made."

Excerpted from Wikipedia’s “liotrix” article, available under the CC BY-SA 4.0 licence.

Gallery (2)

Available in 8 languages

via Wikidata sitelinks · CC0