comprises fundamental biochemical and molecular aspects of drug discovery and basic understanding of modern drug discovery approaches, along with certain key topics related to molecular pharmacology of drugs and therapeutics. The book explains the phenomena of drug-target interactions, considering different biochemical systems and cellular strategies. With the advent of technologies, current advances, and research trends move toward molecular and/or target-based drug design and discovery. Through this book, readers will gain skills and knowledge with a thorough understanding of the subject of biochemical and molecular pharmacology in a comprehensive and systematic manner. Molecular pharmacology has gained significant momentum among researchers, scientists, and academicians because of its increasing interest in drug discovery research across the globe. Molecular pharmacology involves a fundamental understanding of drug actions at the molecular level with the help of several tools and techniques of biochemical and molecular biology.