mobilePK - (formerly JavaPK for Mobiles) - a clinical pharmacokinetic (or therapeutic drug monitoring, TDM) tool for mobile devices including PalmOS v5 PDA phones (Treo series, p/w), Java-supported mobile phones or smartphones (incl. Motorola, Nokia, BlackBerry and Sony-Ericsson), and Pocket PC (WM2003 and WM5/WM6). mobilePK is written in Java (Java ME, JDK v6.0 with NetBean IDE plus Mobility CLDC), and is the FIRST clinical pharmacokinetic program in the world for mobile phones (running SymbianOS v6.0 or later, and CLDC v1.0 and MIDP v1.0 or above). It is built with Sawchuk-Zaske method (aminoglycosides and vancomycin), Chiou method (theophylline iv inf.) and Bayesian estimation method (gentamicin, tobramyin, amikacin, vancomycin, digoxin, phenytoin, cyclosporin-A, lithium, carbamazepine, theophylline and warfarin). With Bayesian estimation, one can use only one blood sample (at steady-state) to estimate individual pharmacokinetic parameters at steady-state.