Pharmacology is the science of drug action and drug delivery. It studies the interaction of drugs whether natural or artificial with the biological systems. It also deals with discovery, research and characterization of chemicals that have the capability of curing a disease. It studies drug synthesis and design, molecular and cellular mechanisms, interactions, toxicology, etc. The objective of this book is to give a comprehensive overview of the different areas of pharmacology and drug development. Also included in this book is a detailed explanation of the various concepts and applications of pharmacology and drug development. With state-of-the-art inputs by acclaimed experts of this field, this book targets students, professionals, pharmacologists and anyone else interested in this field.