Introduction to Pharmacology builds on the strengths of the first edition and contains significant new material to bring the reader up-to-date with the latest practices and principles in pharmacology. Exploring the basic principles in both the therapeutic and toxicological aspects of drug use, the book employs contemporary examples of medication, supplemented with an increased number of accurate and easy-to-interpret figures and diagrams. Additionally, the book presents the important concept of understanding the limitations surrounding the drugs that cure, replace physiological inadequacies, or treat symptoms, and which have led to the system of drug classification.