ABSTRACT

Abstract. In system biology, models play a crucial role to understand, communicate, and analyze a system. Such models are often the result of complex interactions between continuous and discrete logics. In this chapter we give a short introduction to pharmacokinetics, the biological study of the process interactions between a drug and the human body. We show how action systems with continuous behaviour can be used as a precise model for pharmacokinetics processes. The support of action systems for stepwise refinement open the doors to new analysis and prediction tools for better understanding what happens between an administration of a drug dose and the body response.