Book excerpt: Antibiotics Simplified, Fifth Edition is a best-selling, succinct guide designed to bridge knowledge gained in basic sciences courses with clinical practice in infectious diseases. This practical text reviews basic microbiology and how to approach the pharmacotherapy of a patient with a presumed infection. It also contains concise Drug Class Reviews with an explanation of the characteristics of various classes of antibacterial drugs and antifungal drugs. This text simplifies learning infectious disease pharmacotherapy and condenses the many facts that are taught about antibiotics into one quick reference guide. This guide will help students learn the characteristics of antibiotics and why an antibiotic is useful for an indication. With an understanding of the characteristics of the antibiotics, students will be able to make a logical choice to treat an infection more easily.