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1.7 PRA VAW KWATH:
Certain drugs or coplbination of drugs are made into coarse powder (JA VKUn and kept for preparation of Kasaya. Such powders are called Kwath. Drugs are cleaned and dried and coarsely powdered., weighed as per formula and mixed well before packing.
1.8 ARK:
Ark is a liquid preparation obtained by distillation of certain liquids or drugs soaked in water using the Arkayantra or any convenient modern distillation apparatus.
1.9 SHODHIT DRA VYA & SATVA:
Satya is water extractable solid substance collected from a drug. The drug is cut into small pieces, macerated in water and kept over night then it is strained through cloth and solid matter is allowed to settle. The supernatant liquid is decanted and Satva washed by repeating the process adding water and decanting. The Satva so sedimented is dried and powdered.
1.10 PARPATI :
It is prepared by mixing of purified Mercury with Sulphur i.e. Kajjali or with other drugs mentioned in formula and subjecting them to heat according to the Ayurvedic principles. During processing the whole mass takes the shape of a cocktail which is indicative of perfection. Due to the presence of Mercury and Sulphur in combination, the drug has the efficacy to kill bacteria.
1.11 PISHTI:
The ingredients prescribed in the texts are grinded into fine particles in a pestle and mortar made of Mug un I stone and tritura Hng it with rose water for 8, 14 or 21 days, drying them at night under the moon orin the day time under the sun. It is therefore, either called ‘Chandraputit’ or ‘Suryaputit’ accordingly. The adjuncts are used exactly the same way as those of Bhasma.
1.12 RAS-RASAYAN:
Preparation containing mineral drugs as main ingredients are called Ras Yogas, Mercury, Sulphur, Yatsanabha, Hingu-Tankan, Alum, Kuchila, Opium, Dhatura, Siddhi & laypal are fully tested and purified and a method of manufacture of complete Ras (Tablets) is established to give more effect in
1.13 ASAVA AND ARISHTA
Either decoction or water extract is made from the crude drug to which molasses, honey, sugar and certain astringents – such as Dhatakipushp, Babbul etc. are mixed for a certain period. In this condition fermentation takes place and these original drugs undergo chemical changes and develop into one drug-such a preparation is called Arishta. Asava-Arishta of higher potency are clear liquids with pleasant odour. It is said that the more these Asava-Arishtas become old the more effective they are in their action.
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