Our courses on pharmacokinetic and pharmacodynamic studies provide a thorough grounding in this field of fundamental importance in the development and registration of medicinal products. Pharmacokinetic (PK) and pharmacodynamic (PD) studies provide a bridge between science and medicine in the development of a drug. Our first module describes the role of in-vivo PK and PD studies in a drug development programme, sets out the uses to which the findings can be put, and discusses their implications for clinical development and application for marketing approval. The other module extends the learner’s understanding of PK and PD studies from the basics described in PKPD01. It provides detail on a variety of aspects of such studies: design, sampling, data analysis, research in special populations, and bioequivalence testing.