Estimation of pharmacokinetic parameters for simulations of time courses of drug concentrations after oral administration.

Simulations of time courses of drug concentrations after oral administration are frequently hampered by the lack of pharmacokinetic parameters after oral dosing. This article presents methods by which to estimate such parameters from pharmacokinetic parameters after intravenous dosing and knowledge of time of peak concentration and bioavailability after oral dosing. The application of these approaches enables the generation of meaningful graphic simulations of time courses of drug concentrations after oral administration that can have educational and illustrative uses.