modelR03AC03
Extends from Pharmacokinetic.Models.PK_1C_enteral.
Information
| name: | Terbutaline | |
| ATC code: | R03AC03 | route: | oral |
| compartments: | 1 | |
| dosage: | 5 | mg |
| volume of distribution: | 118 | L |
| clearance: | 15.5 | L/h |
| other parameters in model implementation | ||
Terbutaline is a selective beta-2 adrenergic agonist used primarily as a bronchodilator in the management of asthma and chronic obstructive pulmonary disease (COPD). It is also used off-label as a tocolytic agent to delay preterm labor. Terbutaline is approved and still in clinical use as an inhaled and oral medication.
Pharmacokinetics
Pharmacokinetic parameters reported for healthy adult volunteers after oral administration.
References
Ahlström, H, et al., & Rosenborg, J (1999). Pharmacokinetics of bambuterol during oral administration to asthmatic children. British journal of clinical pharmacology 48(3) 299–308. DOI:10.1046/j.1365-2125.1999.00028.x PUBMED:https://pubmed.ncbi.nlm.nih.gov/10510139
Ye, Y, et al., & Tan, W (2015). The Lipid-lowering Effects of R-bambuterol in Healthy Chinese Volunteers: A Randomized Phase I Clinical Study. EBioMedicine 2(4) 356–364. DOI:10.1016/j.ebiom.2015.02.006 PUBMED:https://pubmed.ncbi.nlm.nih.gov/26137575
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)