modelDiphenhydramine
Extends from Pharmacolibrary.Drugs.ATC.D.D04AA32.
Information
| name: | Diphenhydramine | |
| ATC code: | D04AA32 | route: | oral |
| compartments: | 2 | |
| dosage: | 50 | mg |
| volume of distribution: | 3.3 | L |
| clearance: | 7.48 | mL/min/kg |
| other parameters in model implementation | ||
Diphenhydramine is a first-generation antihistamine, commonly used for the relief of allergic symptoms such as runny nose, sneezing, itching, and urticaria. It is also utilized as a short-term treatment for insomnia, motion sickness, and as an antiemetic. Diphenhydramine is approved and widely used today, though often replaced by newer, non-sedating antihistamines for allergy.
Pharmacokinetics
Pharmacokinetics in healthy adults, both sexes, after single oral 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
Spector, R, et al., & Ghoneim, MM (1980). Diphenhydramine in Orientals and Caucasians. Clinical pharmacology and therapeutics 28(2) 229–234. DOI:10.1038/clpt.1980.155 PUBMED:https://pubmed.ncbi.nlm.nih.gov/7398190
Paton, DM, & Webster, DR (1985). Clinical pharmacokinetics of H1-receptor antagonists (the antihistamines). Clinical pharmacokinetics 10(6) 477–497. DOI:10.2165/00003088-198510060-00002 PUBMED:https://pubmed.ncbi.nlm.nih.gov/2866055
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)