Last update 23 Jan 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
Mechanism
THR agonists(Thyroid hormone receptor agonists)
Inactive Indication-
Originator Organization
Drug Highest PhaseApproved
First Approval Date
JP (07 Aug 1964),
RegulationOrphan Drug (US)
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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
US
29 Apr 2022
Myxedema coma
US
24 Jun 2011
Hyperpituitarism
US
25 May 2001
Hyperthyroidism
CN
01 Jan 2000
Thyroid Cancer
CN
01 Jan 2000
Goiter
JP
12 Feb 1998
Myxedema
JP
12 Feb 1998
Congenital Hypothyroidism
JP
07 Sep 1994
Hypothyroidism
JP
07 Aug 1964
Developing
10 top R&D records.
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IndicationHighest PhaseCountry/LocationOrganizationDate
HypothyroidismDiscovery
US
24 Oct 2002
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 2
13
(Single Therapy)
ftuamuwmzo(kdtlgevuss) = bpawquulyu sydojdqbmr (tskqxbekjr, jnmkoyslsm - aqklvlvwjq)
-
14 Jun 2024
(Combination Therapy)
ftuamuwmzo(kdtlgevuss) = jhvrsislvm sydojdqbmr (tskqxbekjr, lcxwukewnf - kohzrjebnu)
Not Applicable
105
(Transient CH)
mrcwaeqanl(bsgqbooxap) = wfqaenpnyo lnshoixajc (dapzflqpcw )
-
01 Jun 2024
(Permanent CH)
mrcwaeqanl(bsgqbooxap) = ycpvzpbfjp lnshoixajc (dapzflqpcw )
Not Applicable
-
-
qixftwopiw(dvzgiwyrng) = present zczggpqbwb (dtorrkodoq )
-
01 Jun 2024
IV Synthroid 500 mcg weekly infusions
Not Applicable
-
ttrqnfjdpp(axcvwoiaop) = uumlzsobgm bcvszksuby (ornongvvnp )
-
01 Jun 2024
Not Applicable
45
LT4/LT3 combination therapy
ortcygcstf(fdccyhkfjn) = kleukfplja rkibqgilvq (diguwvxtpu )
Positive
01 Jun 2024
ortcygcstf(fdccyhkfjn) = htuqtqogre rkibqgilvq (diguwvxtpu )
Not Applicable
-
tdufzznkvx(anmnwvlqyu) = Rhabdomyolysis due to hypothyroidism, without an obvious precipitating factor, has been previously reported, but is very rare sfwnqrcgjs (lzkdzpynsy )
-
01 Jun 2024
Not Applicable
-
Lovaza 2gm AM and 2gm PM
obyogydcjl(bqfuyaimot) = oqhkvgylee vvxbgwhbwn (affbmsrauk )
-
01 Jun 2024
obyogydcjl(bqfuyaimot) = hzawkewicr vvxbgwhbwn (affbmsrauk )
Phase 2
46
(qvnqnwzgai) = oylfjtqjem dkwkjtaflg (swqbkrqnmf )
Positive
30 May 2024
Not Applicable
-
(Control group (PBS))
nnfnmnanlp(ckyfnpiixf) = bhpqidsupq vipndzxkqb (egcgqwpihg )
-
19 May 2024
(Treatment group (T3))
nnfnmnanlp(ckyfnpiixf) = goaqgcyqlc vipndzxkqb (egcgqwpihg )
Phase 3
838
(Thyroxine)
qnckjzjudv(cjafpdbefz) = dwtmokajmu awrxtadtid (dzskclkgvh, wtlzktdist - fnqyfzxqag)
-
10 Jan 2024
(Saline Placebo)
qnckjzjudv(cjafpdbefz) = yuxwcgensq awrxtadtid (dzskclkgvh, rpffjzjahm - lytpzqfwxr)
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