Pharmacy Kinetics and Calculators

by Pritesh Patel, PharmD



Vancomycin Kinetics

Vancomycin pharmacokinetics page allows you to:

  • Calculate patient's renal function using Cockroft-Gault equation
  • Prospectively dose vancomycin based on population estimations of volume of distribution and elimination rate constant and pharmacokinetics equations
  • Determine actual volume of distribution and elimination rate constant with peak and trough provided
  • Optimize the dose with actual volume of distribution and elimination rate constant
  • Calculate an iterated peak if only trough level is obtained
  • Optimize dose with trough level and iterated peak.
Aminoglycosides Kinetics

Aminoglycosides pharmacokinetics page allows you to perform calculations for gentamicin, tobramycin, and amikacin:

  • Calculate patient's renal function using Cockroft-Gault equation
  • Prospectively dose aminoglycosides based on population estimations of volume of distribution and elimination rate constant and pharmacokinetics equations
  • Determine actual volume of distribution and elimination rate constant with peak and trough provided
  • Optimize the dose with actual volume of distribution and elimination rate constant
Rx Calculators

Rx Calculators page allows you to:

  • Calculate age given the patient's birthday
  • Calculate the ideal body weight and actual body weight
  • Calculate patient's renal function using Cockroft-Gault equation and Jelliffe equation
  • Calculate body-surface area
  • Calculated adjusted phenytoin (Dilantin) and calcium level for low albumin
  • Convert temperatures from Fahrenheit to Celcius and Celcius to Fahrenheit.
  • Calculate dose of iron dextran



The calculations on these pages are for adult patients only. Calculations should not be used for infants and pediatric patients.

The calculations provided on this page are based on the principles and equations of pharmacokinetics. The results from these calculations should not replace the clinical judgment of the practitioner. This site assumes no responsibility for injudicious interpretation of calculations.

View the equations used for calculations on these pages: Equations.