Pharmacology-III is a complete textbook for undergraduate pharmacy students as per the latest Pharmacy Council of India syllabus requirement by various universities of India and other universities abroad offering similar curriculum. The book is divided into five units having twenty four chapters; initial section covers drugs acting on respiratory system and GIT, followed by other sections of drug acting on different body systems e.g. toxicology and chronopharmacology. Each chapter has been meticulously elaborated in its unique style of presentation. In each chapter, the prototype drug is described in detail, followed by special distinctive features of other drugs in the same group and more emphasis is given to the latest available drug. Salient features include: Concise and lucid presentation of concepts of pharmacology. Latest and detailed classification of drugs used clinically. Better understanding of the mechanism of drug action and its relevance in the treatment of different infectious diseases. Unique and simple style so that undergraduate students have a clarity on fundamentals of pharmacology. Comprehensive principles of toxicology and treatment of various poisonings