Medicinal chemistry is the study of the chemistry of therapeutically active compounds. This is an exciting, evolving and multi-discipinary field, and "Medicinal Chemistry: An Introduction", provides a comprehensive, balanced introduction to this subject. Written in an accessible style, this text explains fundamental principles, assuming little in the way of prior knowledge. Numerous examples, applications and problems have been included to aid learning, along with summary sections. Focusing on the chemical principles used for drug discovery and design, it also covers physiology and biology where relevant.