Medicinal Chemistry, an evolving andinterdisciplinary field, plays a key role inpharmaceutical research. It involves the study oftherapeutically active compounds.This text bookprovides a concise introduction to medicinalchemistry suitable for undergraduate students. Thebook focuses mainly on examples and illustrates theprinciples and mechanisms with the liberal use oftables and figures. Each chapter begins with a briefintroduction to the disease, drug classification,detailed subsections on different classes thatinclude mechanism of action, therapeutic uses andstructure activity relationships (SAR), among others.