Latest researches in the field of pharmaceutical science have been discussed comprehensively in this book. Since the very beginning of civilization, human beings have been dreaming of a healthy, long lasting and happy life. Due to rapid development of medical science, our life expectancy is now twice longer than 100 years ago. We now know more about diseases than ever and have formulated novel drugs to fight against them. The demand for drugs has been so huge that we have had to develop pharmaceutical industries. Although pharmaceutical industries have been responsible for production of required drugs and providing us a better quality of life, misuse of drugs has further complicated the situation. Therefore, discovery, production, distribution, and the phase of administration of patients' quality assurance needs to be controlled with a technological method and firm regulations to make the system as productive as possible for the well-being of human health. This book presents a compilation of selected but essential information regarding the tools, regulations, sources and technologies on the present status of medicine development.