Concerns Regarding the Use of Kirchhoff’s Laws in Pharmacokinetics

Abstract Over the last two years the idea that the principles presented in Kirchhoff’s circuit and voltage laws also pertain to pharmacokinetics (1–3). It is claimed that these principles make the elimination in the liver and kidney more straight forward to model and provide a rationale for understanding why sometimes during bioavailability studies one arrives at bioavailability values greater than 100%. In this paper it will be shown that these claims are based on incorrect translations of the Kirchhoff’s Laws to pharmacokinetics.