To facilitate the study of compelling and intense content of Pharmacology courses in undergraduate education and to get rid of the effects of the rote system and to interpret the existing pharmacology knowledge within the framework of "personalized medicine" and "rational drug use", it is necessary to learn and deeply understand the subjects of "General Pharmacology" well. This book, which is the product of an intensive study, has been prepared by enriching it with current literature in a way that it has the quality and content to meet the knowledge needs in both undergraduate and graduate and academic fields. Clinical examples are frequently included in order to better understand general pharmacology subjects, and it is aimed to facilitate the comprehensibility of the content with visuals and tables.