Pharmaceutical sciences are a group of interdisciplinary fields of study that are concerned with the delivery, design, action and disposition of drugs. They use tools like physical, inorganic, analytical, and biochemical chemistry, epidemiology, statistics, chemical engineering, physics, chemometrics, etc. The pharmaceutical sciences are categorized into four main branches, namely, pharmacology, pharmaceutical chemistry, pharmaceutics, and pharmacognosy. Pharmacology studies the biochemical and physiological effects of drugs on human beings and pharmaceutical chemistry is the study of drug design. Pharmaceutics focuses on the study and design of drug formulation for best delivery, stability and patient acceptance. Pharmacognosy refers to the study of medicines that are derived from natural sources. This book discusses the fundamentals as well as modern approaches to pharmaceutical science. It traces the progress of this field and highlights some of its key concepts and applications. It aims to equip students and experts with the advanced topics and upcoming concepts in this area.