The PBPKPlus™ Module extends GastroPlus® to define a physiologically based pharmacokinetic (PBPK) model consisting of various tissues. You can easily simulate the distribution and elimination of compound throughout the body and track concentrations in any tissue. Any tissue can employ fixed intrinsic clearance and with the Metabolism and Transporter Module, saturable (Michaelis-Menten) metabolism and transport (influx and efflux) can be incorporated.