The science and technique associated with the preparation and distribution of drugs is known as pharmacy. It acts as a link between health sciences and chemical sciences. Its main goal is to ensure the safety and efficacy of pharmaceutical drugs. The health professionals involved in the practice of pharmacy are called pharmacists or chemists. They are experts in drug therapy. The main sub-disciplines of pharmacy include pharmaceutics, medicinal chemistry, pharmacognosy, pharmacy practice, pharmacology and pharmacoinformatics. Biochemical mechanisms and action of drugs, therapeutic effects, potential drug interactions, etc. are important focus areas of pharmaceutical sciences. This book provides significant information of this discipline to help develop a good understanding of pharmacy and related fields. The various sub-fields of pharmacy along with technological progress that have future implications are glanced at in it. As this field is emerging at a rapid pace, the contents of this book will help the readers understand the modern concepts and applications of the subject.