A non-linear fitting program in pharmacokinetics with Microsoft Excel spreadsheet

We propose a new approach of pharmacokinetics patterns of drugs by use of spreadsheets. We have developed a software program using Microsoft Excel (version 3.0) to determine initial poly exponential parameter values for 1-3 compartment open models and to make non-linear regression with many optimisation procedures. Results are compared with 2 other programs: Nonlin and Rugfit.