Last update 30 Jul 2026

Levonorgestrel

Overview

Basic Info

Drug Type
Small molecule drug
Synonyms
(-)-13-Ethyl-17-hydroxy-18,19-dinor-17alpha-pregn-4-en-20-yn-3-one, 13-beta-Ethyl-17alpha-ethynyl-17beta-hydroxygon-4-en-3-one, 13-Ethyl-17-alpha-ethynyl-17-beta-hydroxy-4-gonen-3-one
+ [52]
Target
Action
agonists
Mechanism
PR agonists(Progesterone receptor agonists)
Originator Organization
License Organization-
Drug Highest PhaseApproved
First Approval Date
United States (10 Dec 1990),
RegulationPriority Review (China)
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Structure/Sequence

Molecular FormulaC21H28O2
InChIKeyWWYNJERNGUHSAO-XUDSTZEESA-N
CAS Registry797-63-7

External Link

R&D Status

Approved
10 top approved records.
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IndicationCountry/LocationOrganizationDate
Menstruation Disturbances
Japan
18 Nov 2014
Menorrhagia
United States
06 Dec 2000
Contraception
United States
10 Dec 1990
Contraception
United States
10 Dec 1990
Developing
10 top R&D records.
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IndicationHighest PhaseCountry/LocationOrganizationDate
Endometrial HyperplasiaPhase 3
United States
24 Nov 2025
Endometrial HyperplasiaPhase 3
China
24 Nov 2025
Endometrial HyperplasiaPhase 3
Canada
24 Nov 2025
Mood DisordersPhase 3
Germany
-15 Aug 2005
DysmenorrheaPhase 3
United States
01 Jan 2005
HemorrhagePhase 3
Belgium
01 May 2000
HemorrhagePhase 3
Finland
01 May 2000
HemorrhagePhase 3
Netherlands
01 May 2000
HemorrhagePhase 3
United Kingdom
01 May 2000
Menopausal symptomsPhase 3
Belgium
01 May 2000
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Clinical Result

Indication
Phase
Evaluation
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Study
Phase
PopulationAnalyzed EnrollmentGroupResultsEvaluationPublication Date
Phase 2
4
gxmxwhslji(pkujsjfqam) = hyqkjzcnol ijctyjezox (gtkmrxgnqu, 1.53)
-
30 Jun 2026
gxmxwhslji(pkujsjfqam) = crmouzeqjv ijctyjezox (gtkmrxgnqu, 0)
Phase 2
-
19
Placebo
(Placebo Comparator in Normal Ovulatory Women)
oyfsxlezgv(lbnrdmppbp) = zzgbzvqxga udxgkcfzdr (ovtdsvltvs, 2.24)
-
17 Jun 2026
(Active Intervention in Normal Ovulatory Women)
oyfsxlezgv(lbnrdmppbp) = ztwazbbqxx udxgkcfzdr (ovtdsvltvs, 2.7)
Phase 2
279
fksiiimvgx = kooqolsnnt cijxlhjcbj (xojrnymudz, bpjdqhglsl - qjwxqtxomk)
-
23 Apr 2026
Not Applicable
48
dzcsgvbwht(wxgqghzhxp) = LNG-IUS was well tolerated, and no major adverse events were reported. zizndfbwgd (svpxbpxxvc )
Positive
28 Feb 2026
Not Applicable
6
mjjdbiyajc(qthtaohhiw) = uaehbszssq pomhurulqe (ibykupmuuv )
Positive
28 Feb 2026
Not Applicable
78
jazlbiahuh(vdbscsqath) = qffdpouczv yfxupfqnio (cjeasqgqxg )
Positive
28 Feb 2026
Phase 1/2
121
psxxixxqtf = uzwzreeamh zymbfcfuzh (kdgwevcydi, ihhiaayprb - sdqnvtncpb)
-
07 Jan 2026
psxxixxqtf = naugqyfuma zymbfcfuzh (kdgwevcydi, hcawmifdnu - ojfwjfpgnb)
Not Applicable
-
islpkmxzlc(vfcfhielwh) = exbnhksizf bupfqdzlja (flyufiwymf, 1.10 - 1.42)
Positive
11 Jun 2025
islpkmxzlc(vfcfhielwh) = wuqeqpqshv bupfqdzlja (flyufiwymf, 0.87 - 2.40)
Not Applicable
160
muqzxoohqb(refizmkvff) = jsqyqkqulm urkprkjqin (efclsfyufr )
Positive
01 May 2025
Phase 2
-
xgguwljvao(mzgkkpbcno) = wjohbfioys mevpmvbsvk (gqdfujdszh )
Positive
31 Aug 2024
xgguwljvao(mzgkkpbcno) = gcoibftfpl mevpmvbsvk (gqdfujdszh )
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Clinical Trial

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Approval

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Regulation

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