modelLevonorgestrelAndEstroge
Extends from Pharmacolibrary.Drugs.ATC.G.G03FA11.
Information
| name: | LevonorgestrelAndEstrogen | |
| ATC code: | G03FA11 | route: | oral |
| compartments: | 2 | |
| dosage: | 0.15 | mg |
| volume of distribution: | 1.5 | L |
| clearance: | 1.0 | L/h |
| other parameters in model implementation | ||
Levonorgestrel and estrogen (commonly ethinylestradiol) combination is widely used as an oral contraceptive for the prevention of pregnancy. This combination is approved and used globally for birth control in women of reproductive age, as well as for management of menstrual disorders and hormone replacement therapy in some contexts.
Pharmacokinetics
Estimated pharmacokinetic parameters for healthy adult women following a single oral dose of levonorgestrel (0.15 mg) and ethinylestradiol (0.03 mg). Data is generalized from published literature on combined oral contraceptive formulations, as direct clinical PK parameters for this exact combination (G03FA11) are sparse.
References
Adedoyin, A, et al., & Iwamoto, M (2019). Effect of letermovir on levonorgestrel and ethinyl estradiol pharmacokinetics . International journal of clinical pharmacology and therapeutics 57(9) 450–457. DOI:10.5414/CP203483 PUBMED:https://pubmed.ncbi.nlm.nih.gov/31232280
Kanarkowski, R, et al., & Jusko, WJ (1988). Pharmacokinetics of single and multiple doses of ethinyl estradiol and levonorgestrel in relation to smoking. Clinical pharmacology and therapeutics 43(1) 23–31. DOI:10.1038/clpt.1988.7 PUBMED:https://pubmed.ncbi.nlm.nih.gov/3121231
Kuhnz, W (1990). Pharmacokinetics of the contraceptive steroids levonorgestrel and gestodene after single and multiple oral administration to women. American journal of obstetrics and gynecology 163(6 Pt 2) 2120–2127. DOI:10.1016/0002-9378(90)90551-h PUBMED:https://pubmed.ncbi.nlm.nih.gov/2124087
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.Mass | weight (from PK_1C) | 75 | patient weight (kg) |
| Modelica.Units.SI.SpecificVolume | VdPerKg (from PK_1C) | 0.9 | Volume of distribution (L/kg) |
| Modelica.Units.SI.MassFraction | F (from PK_1C) | 0.8 | bioavailiability (0-1) |
| Pharmacolibrary.Types.Clearance | Cl (from PK_1C) | 20 | clearance |
| Modelica.Units.SI.Time | adminTime (from PK_1C) | 60 | first administration time (s) |
| Modelica.Units.SI.Time | adminDuration (from PK_1C) | 600 | administration duration (s) |
| Modelica.Units.SI.Time | adminPeriod (from PK_1C) | 8*60*60 | period of administration (default 8 hours)(s) |
| Pharmacolibrary.Types.Mass | adminMass (from PK_1C) | 1000 | administration mass (mg) |
| Integer | adminCount (from PK_1C) | 8 | number of dose administered (1) |
| Pharmacolibrary.Types.Volume | Vd (from PK_1C) | VdPerKg*weight | Volume of distribution (m3) |
| Pharmacolibrary.Types.MassConcentration | Cmin (from PK_1C) | 0.004 | minimal therapeutic range |
| Pharmacolibrary.Types.MassConcentration | Cmax (from PK_1C) | 0.008 | minimal therapeutic range |
| Pharmacolibrary.Types.MassConcentration | Ctox_peak (from PK_1C) | 0.012 | toxicity peak level |
| Pharmacolibrary.Types.MassConcentration | Ctox_trough (from PK_1C) | 0.006 | toxicity trough level |
| Pharmacolibrary.Types.Volume | Vdp (from PK_2C) | VdpPerKg*weight | Volume of distribution (m3) |
| Modelica.Units.SI.SpecificVolume | VdpPerKg (from PK_2C) | 0.9 | Volume of distribution peripheral(l/kg) |
| Pharmacolibrary.Types.Clearance | k12 (from PK_2C) | 1 | intercompartmental C-P clearance |
| Pharmacolibrary.Types.Clearance | k21 (from PK_2C) | 1 | intercompartmental P-C clearance |
| Pharmacolibrary.Types.TransferRate | ka (from PK_2C_enteral) | 0.016666666666666666 | first order absorption rate |
| Modelica.Units.SI.Time | Tlag (from PK_2C_enteral) | 600 | delay between oral administration and absorption (default 10min) |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Types.ConcentrationOutput | C_central (from PK_1C) | ||
| Interfaces.ConcentrationPort_b | centralCPort (from PK_1C) | ||
| Interfaces.ConcentrationPort_b | peripheralCPort (from PK_2C) | ||
| Pharmacolibrary.Types.ConcentrationOutput | C_peripheral1 (from PK_2C) |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Pharmacokinetic.NoPerfusedTissueCompartment | central (from PK_1C) | ||
| Pharmacokinetic.ClearanceDrivenElimination | elim (from PK_1C) | ||
| Sources.PeriodicDose | periodicDose (from PK_1C) | ||
| Modelica.Units.SI.Time | t1_2 (from PK_1C) | elimination half-life | |
| Pharmacolibrary.Pharmacokinetic.TransferFirstOrderNonSym | transfer (from PK_2C) | ||
| Pharmacolibrary.Pharmacokinetic.NoPerfusedTissueCompartment | peripheral (from PK_2C) |
Revisions
- 06/2025 Tomas Kulhanek, generated model from data extracted from PUBMED, DrugBank and LLM(GPT4.1)