modelM02AA01
Extends from Pharmacokinetic.Models.PK_2C_enteral.
Information
| name: | Phenylbutazone | |
| ATC code: | M02AA01 | route: | oral |
| compartments: | 2 | |
| dosage: | 600 | mg |
| volume of distribution: | 0.1 | L |
| clearance: | 50 | ml/h/kg |
| other parameters in model implementation | ||
Phenylbutazone is a nonsteroidal anti-inflammatory drug (NSAID) formerly used to treat pain and inflammation associated with conditions such as rheumatoid arthritis and ankylosing spondylitis in humans. Due to its risk of serious side effects, including bone marrow suppression and gastrointestinal complications, its use in humans has been discontinued or severely restricted in many countries. It is still used in veterinary medicine, particularly in horses.
Pharmacokinetics
Pharmacokinetic parameters reported in healthy adults after a single oral dose.
References
Houck, EL, et al., & Delk, KW (2022). Phenylbutazone pharmacokinetics in southern white rhinoceros (Ceratotherium simum simum) after oral administration. Journal of veterinary pharmacology and therapeutics 45(2) 196–202. DOI:10.1111/jvp.13036 PUBMED:https://pubmed.ncbi.nlm.nih.gov/34894412
Chay, S, et al., & Yocum, J (1984). Population distributions of phenylbutazone and oxyphenbutazone after oral and i.v. dosing in horses. Journal of veterinary pharmacology and therapeutics 7(4) 265–276. DOI:10.1111/j.1365-2885.1984.tb00911.x PUBMED:https://pubmed.ncbi.nlm.nih.gov/6512917
Knych, HK, et al., & Kass, PH (2016). Pharmacokinetics of methocarbamol and phenylbutazone in exercised Thoroughbred horses. Journal of veterinary pharmacology and therapeutics 39(5) 469–477. DOI:10.1111/jvp.12298 PUBMED:https://pubmed.ncbi.nlm.nih.gov/26924025
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)