USMLE Road Map: Pharmacology presents a concise and focused examination of the essential concepts in pharmacology. Through a streamlined and easy-to-follow hierarchical outline format, it guides students through the most important attributes of each drug class and reviews the mechanisms, actions, and side effects of each drug prototype. The outline is enhanced with an extensive and original illustration program that visually conveys the essential information and promotes retention of the material. Features such as clinical correlations and clinical problems are also included.