Complete Guide to Digoxin Pharmacokinetics
Overview
Digoxin is a Cardiac glycoside used in the Cardiology therapeutic area. It is indicated for Atrial fibrillation and congestive heart failure in older adults. Interactive elderly digoxin population pharmacokinetic simulator exploring dose, renal function, body weight, heart failure, calcium-channel blockers, and spironolactone.
Mechanism of Action
Digoxin exerts its pharmacological effect by targeting Na+/K+-ATPase. As a Cardiac glycoside, it modulates this target to achieve therapeutic efficacy in Atrial fibrillation and congestive heart failure in older adults. Understanding the target engagement is critical for interpreting the pharmacokinetic-pharmacodynamic (PK/PD) relationship and optimizing dosing regimens.
Key Pharmacokinetic Parameters
The following parameters are derived from published One-compartment population PK models for Digoxin:
| Parameter | Value |
|---|---|
| KA h-1 | 3.85 |
| V equation | 420*1.2^(TBW/62)*0.857^CHF |
| CL equation | 8.9*0.651^(SCr/111)*(1+0.001*(TBW-62))*0.769^CCB*0.813^SPI*0.881^CHF |
| source model | Chen et al. 2013 |
Parameters represent typical population estimates from published literature. Individual values may vary.
Dosing & Administration
Digoxin is administered via the Oral route. Oral administration involves absorption from the gastrointestinal tract, and bioavailability may be affected by food intake, formulation, and first-pass metabolism.
Dosing recommendations should always follow approved prescribing information. The interactive simulator allows you to explore different dosing scenarios and their impact on drug exposure metrics such as AUC, Cmax, and Ctrough.
Clinical Considerations
In the Cardiology therapeutic area, for the treatment of Atrial fibrillation and congestive heart failure in older adults, understanding the pharmacokinetics of Digoxin is essential for dose optimization and therapeutic drug monitoring. Key clinical factors that may affect Digoxin pharmacokinetics include:
- •Body weight and body composition
- •Renal and hepatic function
- •Drug-drug interactions and concomitant medications
- •Age, sex, and genetic polymorphisms
Interactive Digoxin PK Simulator
Explore Digoxin pharmacokinetics interactively. Adjust doses, dosing intervals, and patient covariates to visualize concentration-time profiles in real time.
Frequently Asked Questions
What is the half-life of Digoxin?
The elimination half-life of Digoxin depends on patient-specific factors. Use our interactive Digoxin PK simulator to explore concentration-time profiles and estimate half-life under different dosing scenarios.
How is Digoxin administered?
Digoxin is administered via the Oral route. It is indicated for Atrial fibrillation and congestive heart failure in older adults. As a Cardiac glycoside, dosing regimens should follow approved prescribing information and clinical guidelines.
What are the key PK parameters of Digoxin?
Key pharmacokinetic parameters for Digoxin include clearance (CL), volume of distribution (Vd), and elimination half-life. See the PK Parameters section above for specific values from published models.
Can I simulate Digoxin dosing scenarios for free?
Yes! PKPDBuilder offers a completely free, interactive Digoxin PK simulator based on published pharmacometric models. No login required. Use it to explore different doses, dosing intervals, and patient covariates.
⚠️ Disclaimer
This guide is for research and educational purposes only. It is not intended for clinical decision-making or patient dosing. Parameters are derived from published literature and represent population estimates. Always consult approved prescribing information for clinical use.