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Levonorgestrel: History, Community, Culture & Applications

Levonorgestrel is a hormonal medication used in a number of birth control methods. It is combined with an estrogen to make combination birth control pills. As an emergency birth control, sold under the brand names Plan B One-Step and Julie, among others, it is useful within 72 hours of unprotected sex. The more time that has passed since sex, the less…

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Levonorgestrel topic overview

The analysis highlights History, Community, Culture and Applications as prominent areas in the source structure around Levonorgestrel.

Related topics
193
Source areas
10
Connected nodes
203
Extracted relationships
248
Concept neighborhoods
49
Bridge connections
203

What this topic covers Research coverage

Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.

Overview · 77 topics
Chemistry · 23 topics
Pharmacology · 23 topics
Medical uses · 21 topics
History · 18 topics
Side effects · 12 topics
Society and culture · 11 topics
Interactions · 6 topics
Contraindications · 1 topics
Overdose · 1 topics

Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

3D model (JSmol)
Interactive image
AHFS/Drugs.com
Monograph
ATC code
G03AC03 (WHO) G03AD01 (WHO)
Bioavailability
95% (range 85–100%)
CAS Number
797-63-7 Y
ChEBI
CHEBI:6443 Y

Explore all related topics Closing gaps

Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.

Overview

Medical uses

Contraindications

Side effects

Overdose

Interactions

Pharmacology

Chemistry

History

Society and culture

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

How Levonorgestrel connects Entity context

The extracted context around Levonorgestrel shows recurring relationship patterns in the source. For example, Levonorgestrel → Alesse, Altavera, Alysena, Amethia, Amethyst, As, Ashlyna, Aviane, Camrese, Chateal, Climara Pro, Cycle, Daysee, Emerres, Enpresse, Erlibelle, Escapelle, Falmina, Introvale, Isteranda Another extracted example is Levonorgestrel → Albert Yuzpe, August, Drug Administration, Eugynon, Following, Food, Germany, Ho, Hughes, In, It, Kwan, Levonelle, Levonorgestrel-only, Many, Microgynon, Microlut, Microval, Neogynon, Norgestrel. Use these groups to spot repeated connection types before inspecting the individual relationships.

Levonorgestrel

Top relations

related to Brand names · 81
Levonorgestrel → Alesse, Altavera, Alysena, Amethia, Amethyst, As, Ashlyna, Aviane, Camrese, Chateal, Climara Pro, Cycle, Daysee, Emerres, Enpresse, Erlibelle, Escapelle, Falmina, Introvale, Isteranda
related to history · 30
Levonorgestrel → Albert Yuzpe, August, Drug Administration, Eugynon, Following, Food, Germany, Ho, Hughes, In, It, Kwan, Levonelle, Levonorgestrel-only, Many, Microgynon, Microlut, Microval, Neogynon, Norgestrel
related to Emergency birth control · 17
Levonorgestrel → ECPs, EMA, European Medicines Agency, FIGO, Gynecology, However, In November, International Federation, Language, LNG, LNG ECP, Obstetrics, One, Planned Parenthood, Taking, The, Yuzpe
related to Generic names · 14
Levonorgestrel → BANTooltip British Approved Name, D-norgestrel, DCFTooltip Dénomination Commune Française, DCITTooltip Denominazione Comune Italiana, INNTooltip International Nonproprietary Name, It, JANTooltip Japanese Accepted Name, Name, Schering AG, SH-90999, USANTooltip United States Adopted, USPTooltip United States Pharmacopeia, WY-5104, Wyeth
related to Pharmacokinetics · 8
Levonorgestrel → About, C16β, C2α, Dihydrolevonorgestrel, It, Oxidation, SHBG, The
related to Synthesis · 8
Levonorgestrel → Chinese, DCM, Deprotection, Ethynylation, Norandrostenedione, PC69910702, The, Treatment
related to Accessibility · 7
Levonorgestrel → Indian Health Services, Levonorgestrel-containing, Native Americans, On, One-Step, Plan, United States
related to Birth control · 6
Levonorgestrel → At, Cipla, Daily, In, It, Piramal
related to Interactions · 6
Levonorgestrel → CYP3A4, If, John's, P450, St, These
related to Chemistry · 5
Levonorgestrel → Besides, C13α, C13β, C17β, It

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

emergency birth control used contraceptive brand contraception effects available combined ethinylestradiol hormone name pregnancy names sex pill use medication medical

Levonorgestrel relationships Subject–Predicate–Object triples

TTTA extracted 248 structured relationships around Levonorgestrel. Examples in this analysis include Levonorgestrel → 3D model (JSmol) → Interactive image and Levonorgestrel → AHFS/Drugs.com → Monograph. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
Levonorgestrel3D model (JSmol)Interactive image1.00infobox
LevonorgestrelAHFS/Drugs.comMonograph1.00infobox
LevonorgestrelATC codeG03AC03 (WHO) G03AD01 (WHO)1.00infobox
LevonorgestrelBioavailability95% (range 85–100%)1.00infobox
LevonorgestrelCAS Number797-63-7 Y1.00infobox
LevonorgestrelChEBICHEBI:6443 Y1.00infobox
LevonorgestrelChEMBLChEMBL1389 Y1.00infobox
LevonorgestrelChemSpider12560 Y1.00infobox
LevonorgestrelCompTox Dashboard (EPA)DTXSID30364961.00infobox
LevonorgestrelDrug classProgestogen (medication); Progestin1.00infobox
LevonorgestrelDrugBankDB00367 Y1.00infobox
LevonorgestrelECHA InfoCard100.011.2271.00infobox
LevonorgestrelElimination half-life24–32 hours1.00infobox
LevonorgestrelExcretionUrine: 20–67% Feces: 21–34%1.00infobox
LevonorgestrelFormulaC21H28O21.00infobox
LevonorgestrelIUPHAR/BPS28811.00infobox
LevonorgestrelKEGGD00950 Y1.00infobox
LevonorgestrelLegal statusCA: ℞-only / OTC1.00infobox
LevonorgestrelLegal statusUK: POM (Prescription only)1.00infobox
LevonorgestrelLegal statusUS: ℞-only / OTC1.00infobox
LevonorgestrelLegal statusRx/OTC1.00infobox
LevonorgestrelMedlinePlusa6100211.00infobox
LevonorgestrelMelting point235 to 237 °C (455 to 459 °F)1.00infobox
LevonorgestrelMetabolismLiver (reduction, hydroxylation, conjugation)1.00infobox
LevonorgestrelMetabolites• 5α-Dihydro-LNG1.00infobox
LevonorgestrelMolar mass312.453 g·mol−11.00infobox
LevonorgestrelOther namesLNG; LNG-EC; d-Norgestrel; d(–)-Norgestrel; D-Norgestrel; WY-5104; SH-90999; NSC-744007; 18-Methylnorethisterone; 17α-Ethynyl-18-methyl-19-nortestosterone; 17α-Ethynyl-18-methyl…1.00infobox
LevonorgestrelPregnancy categoryAU: B31.00infobox
LevonorgestrelPregnancy categoryContraindicated1.00infobox
LevonorgestrelProtein binding98% (50% to albumin, 48% to SHBGTooltip sex hormone-binding globulin)1.00infobox

Related concept clusters Concept neighborhoods

The concept neighborhoods around Levonorgestrel bring nearby vocabulary together. In this analysis, examples include Contraceptive, Emergency and Used. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • Levonorgestrel
    • Contraceptive
    • Emergency
    • Used
    • Birth
    • Control
    • Brand
    • Hormone
    • Pill
    • Testosterone
    • Dose
    • Medical
    • Effects
  • levonorgestrel
    • Contraceptive
    • Emergency
    • Used
    • Birth
    • Control
    • Brand
    • Hormone
    • Pill
    • Testosterone
    • Dose
    • Medical
    • Effects
  • hormonal medication
    • Available
    • Plan
    • Sex
    • Used
    • Pill
    • Device
    • Emergency
    • Contraceptive
    • Intrauterine
    • Others
    • Progestin
    • Androgenic
  • birth control
    • Control
    • Brand
    • Combined
    • Use
    • Name
    • Names
    • Medical
    • Emergency
    • Intrauterine
    • Others
    • Also
    • Introduced
  • combination birth control pills
    • Control
    • Brand
    • Combined
    • Use
    • Name
    • Names
    • Medical
    • Emergency
    • Intrauterine
    • Others
    • Also
    • Introduced
  • emergency birth control
    • Control
    • Contraception
    • Brand
    • Contraceptive
    • Combined
    • Use
    • Name
    • Names
    • Used
    • Medical
    • Pill
    • Pregnancy
  • intrauterine device
    • Intrauterine
    • Others
    • Oral
    • Progestin
    • Effective
    • Pregnancy
    • Medical
    • Names
    • Hormone
    • Effects
    • Name
    • Contraceptive
  • generic medication
    • Available
    • Plan
    • Sex
    • Used
    • Pill
    • Device
    • Emergency
    • Contraceptive
    • Intrauterine
    • Others
    • Progestin
    • Androgenic

Connections between topic areas Semantic bridges

For Levonorgestrel, one of the stronger structural bridges in this analysis connects Levonorgestrel with Overview. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.

Min side: 3
Levonorgestrel — Overview · splits 126 ⟂ 78
Levonorgestrel — Pharmacology · splits 180 ⟂ 24
Levonorgestrel — Chemistry · splits 180 ⟂ 24
Levonorgestrel — Medical uses · splits 182 ⟂ 22
Levonorgestrel — History · splits 185 ⟂ 19
Levonorgestrel — Side effects · splits 191 ⟂ 13
Levonorgestrel — Society and culture · splits 192 ⟂ 12
Levonorgestrel — Interactions · splits 197 ⟂ 7

Map overview Semantic statistics

Levonorgestrel

Nodes204
Edges203
Triples248
Avg. degree1.99
Density0.009804
Components1

Source & methodology

TTTA analyzes the structure around Levonorgestrel to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as History, Community, Culture & Applications, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — Levonorgestrel · EN edition · Analysis: TopicsToTalkAbout

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