modelR06AA09
Extends from Pharmacokinetic.Models.PK_1C_enteral.
Information
| name: | Doxylamine | |
| ATC code: | R06AA09 | route: | oral |
| compartments: | 1 | |
| dosage: | 25 | mg |
| volume of distribution: | 3.0 | L |
| clearance: | 3.5 | L/h/kg |
| other parameters in model implementation | ||
Doxylamine is a first-generation antihistamine belonging to the ethanolamine class. It is primarily used as a short-term treatment for insomnia and as a nighttime sleep aid. Doxylamine is also found in combination with other agents as an ingredient for relief of symptoms of allergy, common cold, or as part of antiemetic preparations. It is approved and marketed in many countries.
Pharmacokinetics
Pharmacokinetic parameters in healthy adult volunteers; oral tablet administration.
References
Luna, BG, et al., & Greenblatt, DJ (1989). Doxylamine and diphenhydramine pharmacokinetics in women on low-dose estrogen oral contraceptives. Journal of clinical pharmacology 29(3) 257–260. DOI:10.1002/j.1552-4604.1989.tb03323.x PUBMED:https://pubmed.ncbi.nlm.nih.gov/2723113
Gill, SK, et al., & Koren, G (2011). Systemic bioavailability and pharmacokinetics of the doxylamine-pyridoxine delayed-release combination (Diclectin). Therapeutic drug monitoring 33(1) 115–119. DOI:10.1097/FTD.0b013e3181ff8bc5 PUBMED:https://pubmed.ncbi.nlm.nih.gov/21079545
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.TransferRate | ka (from PK_1C_enteral) | 0.016666666666666666 | first order absorption rate |
| Modelica.Units.SI.Time | Tlag (from PK_1C_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) |
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 |
Revisions
- 06/2025 Tomas Kulhanek, generated model from data extracted from PUBMED, DrugBank and LLM(GPT4.1)