Optimal Dosing Interval τ = ln(Cmax/Cmin) / ke

Calculate the optimal dosing interval (τ = ln(Cmax/Cmin) / ke) for a drug using target peak and trough concentrations and the elimination rate constant to individualize dosing schedules.

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Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Calculate the optimal dosing interval (τ = ln(Cmax/Cmin) / ke) for a drug using target peak and trough concentrations and the elimination rate constant to individualize dosing schedules

Each component has a specific meaning:

  • Target peak — The target peak recorded for the scenario being assessed.
  • Trough concentrations — The trough concentrations recorded for the scenario being assessed.
  • Elimination rate constant — The elimination rate constant recorded for the scenario being assessed.

Note: Interpret the dosing interval τ result against the thresholds and context described above.

How to Use

Enter the target peak, trough concentrations, elimination rate constant for the scenario you are assessing. Calculate the optimal dosing interval (τ = ln(Cmax/Cmin) / ke) for a drug using target peak and trough concentrations and the elimination rate constant to individualize dosing schedules. Use the dosing interval τ result to inform your calculation.

Frequently Asked Questions