modelJ04AC01
Extends from Pharmacokinetic.Models.PK_1C_enteral.
Information
| name: | Isoniazid | |
| ATC code: | J04AC01 | route: | oral |
| compartments: | 1 | |
| dosage: | 300 | mg |
| volume of distribution: | 0.6 | L |
| clearance: | 13 | L/h |
| other parameters in model implementation | ||
Isoniazid is a bactericidal antibiotic used primarily as a first-line agent for the prevention and treatment of tuberculosis. It is generally approved and used today, often in combination with other antitubercular medications.
Pharmacokinetics
Pharmacokinetic parameters reported for healthy adult volunteers, both sexes, after single oral dose.
References
Chen, B, et al., & Cai, WM (2022). Population Pharmacokinetics and Pharmacodynamics of Isoniazid and its Metabolite Acetylisoniazid in Chinese Population. Frontiers in pharmacology 13 932686–None. DOI:10.3389/fphar.2022.932686 PUBMED:https://pubmed.ncbi.nlm.nih.gov/35928262
Sullins, AK, & Abdel-Rahman, SM (2013). Pharmacokinetics of antibacterial agents in the CSF of children and adolescents. Paediatric drugs 15(2) 93–117. DOI:10.1007/s40272-013-0017-5 PUBMED:https://pubmed.ncbi.nlm.nih.gov/23529866
Wilkins, JJ, et al., & Simonsson, US (2011). Variability in the population pharmacokinetics of isoniazid in South African tuberculosis patients. British journal of clinical pharmacology 72(1) 51–62. DOI:10.1111/j.1365-2125.2011.03940.x PUBMED:https://pubmed.ncbi.nlm.nih.gov/21320152
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)