modelPrimidone
Extends from Pharmacolibrary.Drugs.ATC.N.N03AA03.
Information
| name: | Primidone | |
| ATC code: | N03AA03 | route: | oral |
| compartments: | 1 | |
| dosage: | 500 | mg |
| volume of distribution: | 0.6 | L |
| clearance: | 38 | ml/min |
| other parameters in model implementation | ||
Primidone is a barbiturate anticonvulsant medication primarily used for the treatment of epilepsy, particularly generalized tonic-clonic and partial seizures. It is also used off-label for essential tremor. It is still approved and used today but has been largely replaced by other anticonvulsants in some countries.
Pharmacokinetics
Pharmacokinetic parameters reported in healthy adults following oral administration.
References
Grasela, TH, et al., & Chen, C (1999). Population pharmacokinetics of lamotrigine adjunctive therapy in adults with epilepsy. Journal of clinical pharmacology 39(4) 373–384. DOI:10.1177/00912709922007949 PUBMED:https://pubmed.ncbi.nlm.nih.gov/10197296
Perucca, E, et al., & Fuseau, E (2008). Rufinamide: clinical pharmacokinetics and concentration-response relationships in patients with epilepsy. Epilepsia 49(7) 1123–1141. DOI:10.1111/j.1528-1167.2008.01665.x PUBMED:https://pubmed.ncbi.nlm.nih.gov/18503564
Stephen, LJ (2003). Drug treatment of epilepsy in elderly people: focus on valproic Acid. Drugs & aging 20(2) 141–152. DOI:10.2165/00002512-200320020-00005 PUBMED:https://pubmed.ncbi.nlm.nih.gov/12534314
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)