Book excerpt: The first comprehensive analysis of Asian Medical Alchemy, this book describes the use of herbo-mineral-metal based medicines as used in some of the world's oldest healing traditions. It offers a detailed exploration of Âyurvedic medicinal purification practices that seek to enhance the therapeutic potential of materials, metals and gemstones, as well as offering a concise overview of traditional and modern equipment and methods used in the manufacture of these medicines. The author's unique and fascinating account of the hidden alchemical arts also explains some of the historical background behind the on-going quest amongst Asian alchemists for immortality.