Synopsis Rasa Shastra forms the core of the Ayurvedic treatment.  This branch of Ayurvedic system of medicine deals with the mercury and all the minerals, metals and animal products having therapeutic as well as alchemical importance.  It also describes various types of instruments, heating devices and processing techniques for preparation of different dosage form of medicaments.  During the medieval period, after the development of Rasa shastra as an independent branch, it grew up faster in the prime stream of treatment.  It became more popular due to its small dosage forms, tastelessness, quick effectiveness, long self life and high efficacy with less or no toxicity, in various chronic as well as dreadful diseased conditions.  Rasa Shastra is a very vast and rich subject.  This book will serve as a hand book and help the student to cover the course with ease and confidence.  The current book is an assemblage of the entire subject of Rasa Shastra including history, yantra, musa, kosthi, rasa varga, dhatu, ratna, and sudha varga with legal aspects of contemporary period.