b. Parad (murcurry) : In sanskrit to called the name of rasendra, maharasa, suta, rasaraj etc. synonames. It has different kind of taste, which is very heavy & potential metal. It helps secreting the enjyms, transformation and regenerating the tissues. It is very useful in preventing different kind of deases and nourshing all the vital part of the body.

About rasa medicine :

Rasa is the branch of the aurveda science, which deals with the preparetion of rasa medicine, Nagarjun is the founder of the rasa shastra who uses different preparation of parad. A number of pharmaceutical preparations of rasa medicine along with murcur, sulphur, menerals and poisonous substances is included.

Minerals purification process :

Verious methods-systems are used in the puriphication of rasa-medicine (vikha, iron, abhrak, copper, silver, mercurry, iron-oxide,godanti etc.). These rasa-medicine are prepard by the process like triturating, boiling in cows urin or milk, soaking in herbals juces kipping thesubstance in butter-milk (kanji) parad (murcurry) or gold preparation (sworna bhasma) requries certain herbal substance or juce. these substance require mani purification process before theire final stage.

Uses in yantras :

Puta, musa, plates, bowel, fire are important instruments. Musa is a pot, which is useful to prepare the bhasma. Fire is important for heating, drying, frying, melting, burning,smoking, cleansing,, distillation inorder to prepare rasa-bhasma(powder) medicine.

Kinds of rasa medicines :

Aurveda therapiutic purposes to uselikes gems metals and stones. Rasa medicines contains to effectiveremedical value.

a. Abharak (oxide of mica) : It is useful in oxidation of metals the resulting bhasma (powder). The lungs and rasadhatuto uses an excellant rejuvenetor. Other also useful in asthama and bronchitis.