This text book will enable the students to know about formulation and design a dosage regimen for individual patients. Also they can Interpret and correlate the plasma drug concentration with patient's therapeutic outcomes it provides recommend dosage adjustment in renal and hepatic disease. In this book we have discussed how to analyze and resolve pharmacokintetic drug interactions and Illustrate and apply pharmacokinetic parameters in clinical settings. The text book will guide the students in Interpretation the impact of genetic poylmorphisms of individuals on pharmacokinetics and pharmacodynamics of drugs.