modelNitrazepam
Extends from Pharmacolibrary.Drugs.ATC.N.N05CD02.
Information
| name: | Nitrazepam | |
| ATC code: | N05CD02 | route: | oral |
| compartments: | 1 | |
| dosage: | 5 | mg |
| volume of distribution: | 1.3 | L |
| clearance: | 47 | ml/min |
| other parameters in model implementation | ||
Nitrazepam is a long-acting benzodiazepine derivative that is primarily used as a hypnotic for the short-term management of severe insomnia. It has anxiolytic, anticonvulsant, muscle relaxant, and sedative properties. Nitrazepam is approved in some countries, but its use has generally declined in favor of other benzodiazepines due to concerns about dependence and next-day sedation.
Pharmacokinetics
Pharmacokinetic parameters reported for healthy adult subjects (both sexes) after single oral administration.
References
van Gerven, JM, et al., & Cohen, AF (1998). Pharmacodynamics and pharmacokinetics of a single oral dose of nitrazepam in healthy volunteers: an interethnic comparative study between Japanese and European volunteers. Journal of clinical pharmacology 38(12) 1129–1136. PUBMED:https://pubmed.ncbi.nlm.nih.gov/11301565
Löscher, W, et al., & Schmidt, D (1985). Evaluation of epileptic dogs as an animal model of human epilepsy. Arzneimittel-Forschung 35(1) 82–87. PUBMED:https://pubmed.ncbi.nlm.nih.gov/4039156
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)