modelSulfamethoxazoleAndTrimethoprimC
Extends from Pharmacolibrary.Drugs.ATC.J.J01EC20.
Information
| name: | SulfamethoxazoleAndTrimethoprimCombination |
| ATC code: | J01EC20 | route: | oral |
| n-compartments | 1 |
A combination antibacterial drug consisting of sulfamethoxazole, a sulfonamide, and trimethoprim, a dihydrofolate reductase inhibitor. This combination is used to treat urinary tract infections, respiratory tract infections and other bacterial infections, and is widely approved for clinical use.
Pharmacokinetics
Pharmacokinetic parameters in healthy adult volunteers after a single oral dose of 800 mg sulfamethoxazole combined with 160 mg trimethoprim (co-trimoxazole).
References
Wu, YSS, et al., & Gonzalez, D (2021). External Evaluation of Two Pediatric Population Pharmacokinetics Models of Oral Trimethoprim and Sulfamethoxazole. Antimicrobial agents and chemotherapy 65(7) e0214920–None. DOI:10.1128/AAC.02149-20 PUBMED:https://pubmed.ncbi.nlm.nih.gov/33903114
Autmizguine, J, et al., & Gonzalez, D (2018). Population Pharmacokinetics of Trimethoprim-Sulfamethoxazole in Infants and Children. Antimicrobial agents and chemotherapy 62(1) –. DOI:10.1128/AAC.01813-17 PUBMED:https://pubmed.ncbi.nlm.nih.gov/29084742
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
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 initial generated model