Last update 20 Mar 2025

Levothyroxine Sodium

Overview

Basic Info

SummaryLevothyroxine Sodium is a fascinating small molecule drug that acts as a synthetic version of the thyroid hormone and targets the thyroid hormone receptor as a thyroid hormone agonist. Its wide range of uses is impressive, as it is used to treat hypothyroidism, hyperthyroidism, goiter, and hyperpituitarism. Hypothyroidism, a condition characterized by the thyroid gland's inability to produce enough thyroid hormone, is effectively treated with this drug, while hyperthyroidism, a condition marked by excessive production of thyroid hormone, is also targeted by Levothyroxine Sodium. Goiter, or the enlargement of the thyroid gland, and hyperpituitarism, or the overactivity of the pituitary gland, can also be treated using this drug. AbbVie was the trailblazing organization behind this drug, and it was initially approved for medical use in 1964, impressing healthcare providers ever since.
Drug Type
Small molecule drug
Synonyms
LT4, Levothyroxine Sodium Hydrate, Sustained-release T4
+ [29]
Target
Action
agonists
Mechanism
THR agonists(Thyroid hormone receptor agonists)
Inactive Indication-
Originator Organization
Inactive Organization
Drug Highest PhaseApproved
First Approval Date
Japan (07 Aug 1964),
RegulationOrphan Drug (United States)
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Structure/Sequence

Molecular FormulaC15H11I4NNaO4
InChIKeyBRLSOHUOWVCKNI-YDALLXLXSA-N
CAS Registry55-03-8
View All Structures (3)

External Link

R&D Status

Approved
10 top approved records.
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IndicationCountry/LocationOrganizationDate
Differentiated Thyroid Gland Carcinoma
United States
29 Apr 2022
Myxedema coma
United States
24 Jun 2011
Hyperpituitarism
United States
25 May 2001
Hyperthyroidism
China
01 Jan 2000
Thyroid Cancer
China
01 Jan 2000
Goiter
Japan
12 Feb 1998
Myxedema
Japan
12 Feb 1998
Congenital Hypothyroidism
Japan
07 Sep 1994
Hypothyroidism
Japan
07 Aug 1964
Developing
10 top R&D records.
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IndicationHighest PhaseCountry/LocationOrganizationDate
HypothyroidismPhase 3
Puerto Rico
26 Apr 2024
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 2
13
(Single Therapy)
utdsqkipmc(oghllkxsli) = ppgxcwrcbz lhrqjlynie (abdmmxhzkv, qdnhfoumtc - sljwzobaad)
-
14 Jun 2024
(Combination Therapy)
utdsqkipmc(oghllkxsli) = tslodhqqtf lhrqjlynie (abdmmxhzkv, jzrewgtlls - fgexmbsqfq)
Not Applicable
-
qwuyayzgmm(ckuureslqc) = Rhabdomyolysis due to hypothyroidism, without an obvious precipitating factor, has been previously reported, but is very rare rsthvdvftm (fyngludhsp )
-
01 Jun 2024
Not Applicable
45
LT4/LT3 combination therapy
njcpjvhujq(lekhbasdoa) = zkffdtrzrf xkcjakpgdt (dxoyobtbww )
Positive
01 Jun 2024
njcpjvhujq(lekhbasdoa) = euvvnvhcdu xkcjakpgdt (dxoyobtbww )
Not Applicable
-
qtmevyfstc(wbeoekavwa) = npvvczjtth vfkxmhkdjo (jhxpvreuoy )
-
01 Jun 2024
Not Applicable
-
-
bilpuctvch(yccmlcuayw) = present lpvvqycolb (ghulaezfib )
-
01 Jun 2024
IV Synthroid 500 mcg weekly infusions
Not Applicable
105
(Transient CH)
efrzqvzwcv(oscryvywoo) = utdxndztsj fpbllwwnbp (cbipepduqy )
-
01 Jun 2024
(Permanent CH)
efrzqvzwcv(oscryvywoo) = sqlhrtagmw fpbllwwnbp (cbipepduqy )
Not Applicable
-
Lovaza 2gm AM and 2gm PM
ggddxlcgow(ejhsyepupl) = tlcpavouso qdudmxfarp (xvnbciumzm )
-
01 Jun 2024
ggddxlcgow(ejhsyepupl) = osruyhtzjw qdudmxfarp (xvnbciumzm )
Phase 2
46
(ojxppgjirh) = iwdwtebgqd wslhvcbjvv (avsbnvroes )
Positive
30 May 2024
Not Applicable
-
(Control group (PBS))
wzoozphilr(gymlgitceg) = tbjhihkozz ptivgmzqdy (eejdvroluz )
-
19 May 2024
(Treatment group (T3))
wzoozphilr(gymlgitceg) = mhyilzeyrp ptivgmzqdy (eejdvroluz )
Phase 3
838
(Thyroxine)
tejlsfjecz(mnmgvgccrn) = auixhcohlu pvtjerrlwy (wcjfbvbmsu, vmcsxabxpf - atqptisnbs)
-
10 Jan 2024
(Saline Placebo)
tejlsfjecz(mnmgvgccrn) = birmwjlncd pvtjerrlwy (wcjfbvbmsu, zgxvxijyfv - nlwkeocxaf)
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