Ayurveda, the most popular healthcare system since ancient times, touched to new dimensions after having incorporated with the knowledge of Rasaushadhies from 8th A.D. onwards. Since then the metals and minerals were used abundantly in various dosage forms and in due course of time Rasa Shastra became an integral part of Ayurveda.
Regarding these Rasa preparations, Acharya Nagarjuna was of the opinion that, these are highly potent drugs. In one word, it can be said that, Rasa preparations are the strength of Ayurveda. The use of metallic preparations in healthcare is a unique characteristic feature of Ayurveda & Siddha systems of medicine. The doses of these preparations are very small and the shelf life is very Lang and duration of treatment is also short. These features have importance in treatment. There are a number of metals / minerals like Iron, Cupper, Gold, Silver, Mercury, Sulpher, Arsenic, Lead and Tin Etc. have been mentioned in Ayurveduic classics for therapeutic purposes. The bhasma preparations are crucial as it involves many processing techniques involving nanotechnology. Different types of processing techniques like, Pounding, Grinding, Boiling, Heating, Dipping in different liquids etc. have been explained in ancient texts, which have their own scientific background, The sequence of these processes may change from metal to metal. All these processes are to be studied properly in preparing standard classical ayurvedic drugs for Quality Assurance. The paper discuses about the classical concepts and few modern parameters to be adopted in Bhasma Standardization.