The primary objective of this book's composition is to comprehensively address the intricate topic of the pathophysiology of many diseases. The textbook serves as a comprehensive resource that facilitates the understanding of fundamental concepts for undergraduate students, encompassing a wide range of subject matter. The organization of the chapters is designed to elucidate the underlying mechanisms of various disorders. The present textbook exhibits potential utility not alone for individuals pursuing pharmacy studies, but also for those engaged in Medical, Nursing and other paramedical disciplines. The aforementioned book is anticipated to serve as a valuable resource for both pharmacy students and educators.