modelRifamycin
Extends from Pharmacolibrary.Drugs.ATC.D.D06AX15.
Information
| name: | Rifamycin | |
| ATC code: | D06AX15 | route: | oral |
| compartments: | 1 | |
| dosage: | 400 | mg |
| volume of distribution: | 15 | L |
| clearance: | 10 | L/h |
| other parameters in model implementation | ||
Rifamycin is a semi-synthetic antibiotic belonging to the rifamycin class. It is used primarily as a topical antibacterial agent for the treatment of skin infections and some gastrointestinal infections (as rifamycin sodium or rifaximin). It is no longer widely used systemically due to resistance and other derivatives (like rifampicin) are preferred. Rifamycin is still approved for certain topical and GI indications.
Pharmacokinetics
Estimated pharmacokinetic parameters for topical or oral gastrointestinal use in adult population as no published compartmental PK model available for the rifamycin active substance.
References
Hoy, SM (2019). Rifamycin SV MMX. Clinical drug investigation 39(7) 691–697. DOI:10.1007/s40261-019-00808-2 PUBMED:https://pubmed.ncbi.nlm.nih.gov/31172447
Scarpignato, C, & Pelosini, I (2005). Rifaximin, a poorly absorbed antibiotic: pharmacology and clinical potential. Chemotherapy 51 Suppl 1 36–66. DOI:10.1159/000081990 PUBMED:https://pubmed.ncbi.nlm.nih.gov/15855748
Zheng, C, et al., & Gao, F (2017). Clinical and pharmacological hallmarks of rifapentine's use in diabetes patients with active and latent tuberculosis: do we know enough?. Drug design, development and therapy 11 2957–2968. DOI:10.2147/DDDT.S146506 PUBMED:https://pubmed.ncbi.nlm.nih.gov/29066867
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)