“Principles of Pharmacology: The Pathophysiologic Basis of Drug Therapy, Third Edition”, is a primary textbook for a first course in pharmacology. It offers an integrated mechanism-based and systems-based approach, incorporating the cell biology, biochemistry, physiology, and pathophysiology of organ systems. The completely updated Third Edition features content reflecting current research findings, more than 400 full-color illustrations, drug summary tables, and increased coverage of drug metabolism and the treatment of mycobacterial infections.