Delves into the study of drugs and their effects on biological systems. This includes topics like drug composition and properties, interactions, toxicology, therapy, and medical applications. Books in this section are often aimed at healthcare professionals, students in medical and pharmaceutical fields, and researchers. They cover everything from the basics of drug action to complex topics like neuropharmacology, chemotherapeutics, and personalized medicine. This subcategory is essential for anyone needing to understand the mechanisms of drug action and use, as well as the ethical considerations involved.