Monday, May 25, 2020

AYURVED PRAKASH - REVIEW, PRACTICAL SEARCHLIGHT & CURRENT PHARMACEUTICAL ASPECTS


Review of Ayurved Prakash & Comments According Current Scenario

Ayurved Prakasha is one important ancient script on ancient Indian Alchemy written by Shrimad Madhava Upadhyaya in 17th century. Three commentaries are available on this text. Principally it is a summarized combinatory book along with its own important contributions. Subject matter of the text contains total 1693 verses which are divided into 6 chapters. There is elaborate description of Parada, Hiraka, uparasa, dhatu, upadhatu, ratna, uparatna, visha and  upavisha  along with their processing, therapeutic aspects, it’s use in dhatuvada (processing with metals, minerals, ores, alloys) and  dehavada (therapeutic practice).
Alchemy (science dealing with metals, minerals, ores, alloys) was in practice for various purpose since ancient times. History of Indian Alchemy (known by different names as Dhatuvidya, Dhatuvada, Dehavada, Rasavidya /Rasashastra) dates back to ancient most literature on Indian system of medicine or life sciences to the knowledge of mankind. Many books were written in different era on Indian Alchemy. Ayurved Prakasha is one of the important texts among them. It was composed in later part of medieval century i.e. 17th century. In that time Rasa Sastra was well established and practiced widely. The book was written by Shrimada Acharya Madhava Upadhyaya - a resident of Saurashtra, belonging to Sarasvata kula which was composed during his stay at Kashi (Varanasi). Original text was published by Acharya Yadavji Trikamji through Ayurvediya Granthamala. Later on this was edited with Hindi commentary by Vaidya Somadeva Sharma, the Arthavidyotini and Artha prakashini Samskrit & Hindi commentaries respectively by Shri Gularaja Sharma Mishra through Chaukhambha Oriental publications Varanasi. Subject matter of the text contains total 1693 verses which are divided into 6 chapters.

Importance of the Ayurved Prakash

The subject matter of the text is mainly Alchemy with elaborative description of pharmaceutical approach of Parada (Mercury) especially Parada samskara and detailed description of Drugs of mainly mineral origin (Uparasa, Dhatu, Upadhatu, Ratna, Uparatna) and Visha upavisha. It contains important summarized, combinatory aspects from then available texts on the subject, which were found practically applicable, tested experimentally along with own creations and modifications which is of much significance as it reflects the trustworthiness of the subject matter. The pattern of classification of Mineral drugs (Rasavarga dravya) is found unique in nature.

Subject matter of the text is divided into 6 chapters which contain total 1693 verses.

1st Chapter
Suta Sadhanadhyaya





Contents

This chapter is dedicated to Parada where mainly Dhatuvada (Pharmaceutical) and Dehavada (Pharmacotherapeutic aspect) are described.  Parada Dosha, Parada samskara, drugs (individual and group of drugs along with their description), formulations required for Parada samskara (Vida, satva, Bija grasa, druti etc), formulations of Parada (bandha, murcchana, Bhasma etc), method of consumption of Parada and its formulations, anupana, pathya, apathya, rasajirna lakshana and its treatment, rasajirna lakshana (in dehavada and in Dhatuvada), Hemavati vidya (Technology of preparation of Gold from various Rasavarga dravya and Parada) are mentioned. Two classifications (3 and 5 types in each) of sagandha murcchna and 5 types of Dhatu Pishti are mentioned. Features of acceptable Parada, Bandhana, mrita suta are mentioned along with  short and easy methods of Parada samskara. Property of Dantagre Kachakachabhava (creting sensation in the teeth) for properly prepared mruta suta is explained. Different types of Kupi, method of plastering of Kupi, Yantra (Assemblies). Sahastravedhi Parada, description, types, examples and uses of vida, features of Tapta khalva, uses of various types of Abhraka, features of Garbhadruti are mentioned. Different types of khota, various effects of sequential Grasana on Parada and 26 types of bandha are quoted by Author. Author explains Samukha Jarana, 2 Types of Abhraka Jarana- Patrabhraka Jarana, and Abhraka Satva Jarana, features of Garbhadruti and uses of various types of Abhraka in this chapter.













Peculiarities

Author has stressed on importance of Jarana and Bija Grasa in Parada for dhatuvada as well as dehavada, Kshetrikarana (pre-procedure of administration), Gandhaka Jarana, and sequence of Jarana. Author quotes 2 sequences of Jarana- for Dhatuvada?-Abhraka Jarana, Garbhadruti Jarana and Svarna Jarana and for (dehavada) internal administration-(i) Gandhaka Jarana, Svarna Jarana, Abhraka Satva Jarana, sarva Loha Jarana (ii) Gandhaka Jarana, Abhraka Satva Jarana, Parada Marana. Author focused on compulsion of Gandhaka Jarana and Abhraka Jarana. Four different types of Yantra are mentioned for Jarana. For internal administration of Parada, author stressed on Jarana of Gandhaka in Parada (Antardhumavipachana)  without which it’s use is strictly prohibited and  considered it as mandatory before using it in any yoga or for preparation of Jarana, Pishti, Kajjali etc . Author appreciates to take samaguna shadaguna balijarit Parada for these processes, formulations and indications. He permitted to use Parada after ashta samskara and murcchana with Gandhaka till disease cure (Short term use) only. For disease treatment Author advised to use shodhit, murcchit, Gandhajirna, Svarnadi dhatujirna and mruta or amruta Parada (with double the quantity of Gandhaka). For Rasayana after jarana with Gandhaka it is advocated to subject Parada for Jarana along with satva of Svarna, Abhraka etc Dhatu and then subject it to marana. Nirgandha Murcchana is said to cause complications.
Duration of administration of Parada is stated as 40 days, 6, 12, 36 months and for whole life in the form of intermittent cycles of 40 days. Quantity for samskara of Parada is mentioned. 3 different methods of Jarana are mentioned and it is advised to take Gandhaka rather than Kajjali for Jarana. 3 types of Antardhuma method of Gandhaka Jarana are mentioned which are considered as Rasasindura. Murcchana and Jarana are said as synonymous. Ariloha Marana for Grasa is accepted in Lohavada. He accepted failure to prepare Druti and difficulty in processes of Sarana, kramana, and Jarana for preparation of kotivedhi Parada. Swedana in dolayantra is mentioned as a method of Jarana. Author quoted 2 types of Parada bhasma- (1) Urdhvaga- sindura, karpura Rasa (2) Tala bhasma along with 6 different methods of preparation of Parada bhasma.
Author opined that for Kshetrikarana snehana, swedna, virechna and kitapatana should be done in sequence and Rasa kalpa should be administered after consumption of Abhraka Satva pradhana yoga for up to 6 months or 1 year and after ensuring disease free state for above stated period. It is advised to consume Abhraka bhasma for 1 month before kshetrikarana. Consumption of Hema Jirna Parada bhasma in the dose of 1, 2, 3, 4 pala is said to increase the longevity of life respectively.
The text focusses Yogavahi property of Parada. It has mentioned to use Bida gutika for Grasa and Jarana, Shambhavi Mudra for Rasa Marana. The author explained different benefits of formulations of Parada prepared by Jarit Parada with respective proportions of Gandhaka for Jarana. Agnisthayee Parada is quoted as necessary for jarana of Svarna and Rajata. He further opines that Antardhuma vipachit Parada if processed for Jarana becomes Sahastravedhi and capable for Vedhana of Rajata, Tamra and Abhraka. It is mentioned that after Murcchana samskara, Parada becomes devoid of 7 doshas. He has given optional methods of processing and mentioned substitute drugs for processing of mercury in their unavailability. Author has mentioned to wash Parada with Kanji after each Samskara. Given some universal examples to know hidden meanings e.g. quantity of each drug individually in Parada samskara. It is mentioned that by Bandhana of Parada, threshold of Parada for heat increases. Grasana of Rasavarga dravya in Parada is included under Mardana samskara which signifies importance of mardana in Grasana.
Explanation of Srushtyambuja is given and Laghuputa is also mentioned for Bodhana samskara. While mentioning features of acceptable Parada, it is permitted to use Dhumra (Black along with Red) and paripandura varni (Yellowish white) Parada rather than chitra or karbura varni (different colours). Abhraka Satva Jarana is quoted as best for pakshakartana of Parada.
Kachakitta (Which type of Abhraka/ Kacha and Loha kitta) is said to avoid for Dhatuvada. It is mentioned that Druti of Bija in Parada can be achieved easily with Amladrava, tapya Satva and vyoma Satva.
Examples of Dhatu bhasma preparation with Ariloha for giving their Grasa in Parada, Ariloha Marana is accepted in Lohavada.
Swedana in dolayantra is mentioned as a method of Jarana, quantity for Grasa, different effects of sequential administration of Grasa on Parada, importance of Abhraka, Loha, Tamra Jarana for Dhatuvada, different effects after Jarana of various Rasavarga dravya, importance of Tikshna Loha Jarana for preparation of Svarna, Four types of Svarna Grasa as per quantity of grasa are mentioned for preparation of Shatavedhi Parada and it is stated as an essential stage before Sarana samskara. It is mentioned that Chatuha shashti Jirna Parada with Svarna becomes Dhumavedhi, Sparshavedhi, Avlokavedhi and Shabdavedhi. Samajirna- shatavedhi, dwiguna jirna- sahastravedhi same way Ayutvedhi, Lakshavedhi and Kotivedhi. Nyunajirna parada is used for patralepana (dhatuvada). Author quoted different types of khota as per different classics, Bahya Druti Sarana and reference of Jarana for seven times for preparation of kotivedhi Parada. Simultaneously the author accepted difficulty in preparation of Sarana and Jarana too.
 Different methods of preparation of Jarana, Vedhana, Ranjan through Khota Bandha, definition of Bandha, and 25+1=26 types of bandha are mentioned. Author had mentioned 4 types of Bandha from different texts and given 2 types of Parada bhasma- (1) Urdhavaga- sindura, karpura Rasa (2) Tala bhasma. Kupipakva method is named as process of Rasa bhasmikarana and Rasa Sindura. Antardhuma as well as Bahirdhuma method of Kupipakva Rasayna (Rasa sindura, Rasakarpura) prepared with kramagni for 3 days as a method of preparation of Rasa bhasma. Colour of Rasa bhasma is told as Aruna as like bandhukapushpa and dose is mentioned as 3 ratti. Features of mrita suta and 6 different methods of preparation of Parada bhasma along with collection from other texts are quoted. 
Kshetrikarana and complications of consumption of Parada (failure of deha kramana) without preceding Kshetrikarana is mentioned. After Kshetrikarana it is mentioned to consume Parada which is Jarita with 1\4th part of Abhraka Satva, ½ part of kanta Loha bhasma and equal parts of Tikshna Loha bhasma and then use Arota (shuddha Parada). For Kshetrikarana it is stated to follow snehana (3 days), Swedana, virechana and kitapatana in sequence or to undergo at least virechana, to consume Abhraka bhasma for 1 month or Abhraka Satva pradhana yoga for up to 6 months or 1 year and to ensure the disease free state for above stated period before administration of Rasa kalpa. Agnisthayee Parada is mentioned as capable for converting lower metals into Svarna and Rajata.
Mentioned method of consumption of Parada kalpa, doses of Parada as 1 valla (2 or 3 ratti), animal dose- 12 masha and doses of Jirna Parada as per other texts as 1 gunja to 1 masha, and dose of Hema jirna, Rajata Jirna and Tamra Jirna Parada is quoted as1, 2 and 3 gunja respectively. The text describes benefits of consumption of Hema, Rajataa, Shulva, Tikshna Jarit Parada in increasing doses for longevity. He has described acceptable place for the collection of medicines. The text mentioned Shambhavi Mudra for Rasa Marana and mentioned different benefits of formulations of Parada prepared from parada which is processed for jarana with different proportions of Gandhaka. Features of Rasa Jirna, Rasa Ajirna and its treatment are mentioned. It is mentioned that Parada consumed by wrapping in betel leaf doesn’t causes Vidabandha which is treated with Kana and Amruta.
Author quotes Hingula as compound of Gandhaka and Parada apart from mention of its method of preparation from text Rasaprakasha Sudhakara. Total 17 formulations of Parada, few devoid of it are mentioned in this chapter.  Churnaratna  churna yoga by putapaka method is distinct entity mentioned in the text. Chumbaka Loha is said to be useful for Parada karma.



2nd Chapter
Gandhakadi Uparasa Sadhanadhyaya


Contents
Detailed description of 20 uparasa, mishraka gana eg.-Amlavarga, Dravana varga, sneha varga,  panchamrta, yantra, Bhavana, description of puta, bhasma pariksha is given. Classifiaction of Rasavarga dravya is given where 6 drugs are included under Sadharana Rasa, 9 under Dhatu and 7 under upadhatu.14 different formulations of Gandhaka are mentioned.
He had quoted references of classification of Rasavarga dravya, uses of Shukti as per its type. Definition of Dhatu, description, uses and various types along with examples of vida dravya eg vadavanala type of vida for pachana and grasana of all Loha in parada is mentioned.








Peculiarities
Parada is considered as Maharasa. Highest numbers of drugs among then available texts i.e. 20 are included under Uparasa. Chumbaka is mentioned under Uparasavarga dravya by this author only. Gandhaka is considered as Satvasvarupa and Sutendra viryaprada, Sutajita. Kurmaputa vidhi is mentioned for Gandhaka Shodhana (with ghrita, kanji as liquids for dhalana apart from commonly used godugdha). Bhrungaraja shodhit Gandhaka is said to be comparatively much safer. Vishahara property and Gandhanashana vidhi of Gandhaka are mentioned. Duration of consumption Gandhaka is mentioned as from 1 month-6 month.   Marana of Hingula is mentioned. Total dose of Abhraka is mentioned as 100 Pala. Marana of Abhraka with only one puta and use of only Tankana for marana, making abhraka devoid of lusture by dhalana and peshana processes, criteria for selection of Abhraka i.e. from depth of 1 purusha below the earth surface, satvaprada character of Abhraka are contributions of the text. Specifically mentioned susukshmavta as examination criteria for Abharaka bhasma. Haratala is mentioned as Rasayana, Stripushpaharaka and Vishahara. Nirdhuma pariksha for Haratala Bhasma is mentioned first time. It is mentioned to consume Haratala in repeated cyclical manner. Author has mentioned Godanti type of haratala and given sequence of comparative betterness of type of Haratala as Pinda – Tabaki – Godanti - Bugadadi Haratala which are different from common trend of other texts. He further had quoted reference of Hartala bhasma prepared from 441 bhavana with different drugs as per siddha tradition which is has broad spectrum of applicability.
“Surama” is named as synonym of Strotonjana. Common method of Shodhana and Satvapatana of Anjana are quoted. Author had mentioned Satva patana of many drugs. Four types of bodarshrungam (Murdarshringi) with its source as Gurjar mandala, is given and considered it as satva of Sisaka. Four different types of Chumbaka or Kanta Loha are mentioned. Vahnijara is termed as variety of Kshara and said to be useful for Parada Jarana. Common dose of various Dhatu, method of Somamruta (Loha bhasma) is mentioned. Author quoted reference for importance of agnisthayee Rasaka in Dehavada and dhatuvada. For swedana as method of swedana of Manahshila author advised to take oil as liquid.



3rd Chapter
Suvarnadi Dhatu Upadhatunam Utpatti Nama Lakshana Guna Shodhana Marana Pratipadanatmakam Adhyaya



Contents
Dhatu upadhatu utpatti, nama, lakshana, guna, karma, dosha, doshashanti upaya, Shodhana, Marana and definition of dhatu is mentioned in this chapter. Detail description of  7 type of Dhatu Suvarna, Rupyaka,Tamra, Vanga, Jashada, Sisaka, Loha and 9 types of Dhatu ( as per navagraha) named as Tamra, Rajata, Ara, Naga, Hema, vanga, Tikshna (Loha), Kamsya and Varta Loha, 7 types of Upadhatu such as Suvarnamakshika, Rajata makshika,Tuttha, Kamsya, Pittala ,Sindura and Shilajatu is given. Author explained method of preparation of druti of svarna, Rajata and Loha, along with amrutikarana and nirutthikarana of Loha, benefits of Loha marana, general rule for administration of Loha, method of examination Mruta and amruta Loha.






Peculiarities
Type of Svarna derived by contact with divya aushadhi, Mani etc is found to be quoted. At the start of the chapter clearly mentioned that with the help of Gandhaka (etc Uparasa) usually Marana of all Dhatu (upadhatu) can be done. Mentioned different colour of Tamra bhasma and accepted exception to the rule of nischandratva in case of Parada marit Tamra bhasma. References of somamrut Loha bhasma and suryatapi Lohabhasma (Without direct incineration) are quoted. Author mentioned doses of various Lauha (Dhatu, upadhatu) along with common dose of Lauha. General rules for putana (type of Puta), methods of marana of different Dhatu upadhatu varga dravya are stated together and common process of Dhatu marana is mentioned. Author has collected various common methods of Lauha shodhana. Sequence of nirvapana of Dhatu, upadhatu etc. in liquids for shodhana as per common trend is noted to be changed by author. Common method of nirutthikarana of Lauha is mentioned. Physical characteristics of sat and Asat Suvarna are given. Author had included 2 varieties of Loha in different classified groups i.e. Tikshna Loha under dhatu varga where as Chumbaka (kanta loha) under uparasa varga. Although not included under the classified group of Dhatu still Mandura is described in this chapter. Kanta Loha bhasma is said as substitute of Svarna or Rajata Bhasma in unavailability of each of them. Treatment of complications due to Loha is explained in detail. Author has used the word Huntal for Hrunnala Tikshna Loha.



4th Chapter
Upadhatu Nirupanadhyayah
Contents
Detail description of svarnamakshika, vimalamakshika, tuttha, Bhunaga, Kamsya, pittala, bharta loha (pancha Loha), shilajita and Chapala is given.




Peculiarities
Sisaka and Nagagarbha are termed by author as synonyms of Sindura and mentioned characteristics of acceptable form of sindura. Description of Bharta (pancha Loha) and 3 different types of Rajata are mentioned. Different variety of Shilajatu produced naturally in Kshara bhumi is mentioned, it is included under upadhatu and said to have characteristics of Rasa, Uparasa, Ratna and Loha. It is advocated to take Shilajatu having Lohaja lakshana (Characteristics like Loha/Dhatu). Method of Satvapatana and marana of shilajatu are mentioned. Author appreciates use of vessels prepared from Kamsya for meal and cooking where as cooking of Ghrita in it is prohibited. Two varieties of Svarna makshika are mentioned one with yellow colour from Kanyakubjya and another with panchavarna from banks of Tapti river. It is said to use as substitute of Svarna, which is further allowed to substitute with Svarna Gairika in unavailability of the prior one. It is said to have almost similar properties (in lesser potency) as that of Svarna along with other properties too due to various compositions. A variety of Shilajatu as Soraka is quoted from Rasapaddhati.  After shodhana it is advocated to do dhupana of shilajatu and it is said to be compatible with all anupana in all disease conditions.



5th Chapter
Ratnopa Ratnanam Sadhanadhyaya
Contents
Detail description of 9 Ratna and 17 type of uparatna is given. Mainly Hiraka is elaborated. Difference in between Ratna and Uparatna is written. Satvapatana of Kankshi and sasyaka is mentioned in this chapter.



Peculiarities
New terminology in metrology i.e. “Purusha”, “kalanja” (equivalent of 2 shana) and others for weighing Hiraka e.g. panasika, tandula, pinda etc”, difference in between Mani and Ratna ,and definition of Ratna are contributions of this book. Usefulness of Mani (Ratna) in bandhana of Parada and 8 different sources of Mukta (pearls) are explained. Comparatively elaborative description of Hiraka is found only in this text. Hiraka is said to be shadrasa and mrutyunjaya (overcomes death). Different methods of examination of Hiraka (8 methods), Mukta are found in this text only. Reference of 6 varieties of Shukti is contribution of the text. 5 types of Ratna, 8 types of Mani, 8 types of pukharaja are mentioned by author. Author has mentioned places of mines (of which type Hiraka) in different era.  Black variety of Saurashtri is an important contribution of this text.



6th Chapter
Vishopavisha Lakshana Jati Guna Seva Pariharadhyayam

Contents
The author descriptively mentioned pharmacognostical features of various visha, their Place of collection, guna of Visha, samanya visha Shodhana vidhi, and various specified methods of visha Shodhana, Pharmacotherapeutic dose and contraindications. Method of preparation of Kshara is mentioned.






Peculiarities
There are 18 types of kanda visha mentioned in the text which are classified as per intensity into -Soumya visha and Ugra visha, the prior one is stated as fatal after oral administration, therapeutically useful in Rasayanvada, Dhatuvada and Vishvada, in diseases like- vatarakta, tridosha, unmada, apsmara, sannipata, kushtha & moha and the later one is stated as fatal on contact or even with inhalation and not used as medicine or for Rasayana treatment.
Use of visha in Dhatuvada, Putana and Marana vidhi of visha are contributions of the text.
In case of overdose of visha and in vishavega administration of tankana with plenty of ghrita is mentioned.
It is written that if Parada is triturated along with upvisha it becomes chhinnapaksha (reduced motility) and becomes mukhkara (i.e. accepts Grasa of Dhatu very quickly) too.
Taila patana vidhi of visha with similar process as that of Satvapatana with kaancha yantra is contribution of the text which is said as useful in making Parada kshutkari and Mahaan by triturition along with.
General antidotal formulations like- Vishavajrapata Rasa and Lavanbhedi sudhanidhi Rasa are mentioned.
Kshara in powder form is indicated by author for pratisarana.

Author cursed to the hackers of intellectual property which reflects probable efforts taken by him in verification of experimental outcomes. Author pledges and stresses that all experiments written in the script are practically done by him; the subject matter of the text himself listened from the teachers and purposefully excluded the failed, less useful, difficult experiments. Mentioned various easy methods of Svarna nirmana (Hemavati vidya) too which are still not famous in the society. Some references quoted from other texts on prima facia looks like hyperbolae which limits the above cited declaration of the author. The name of the text suffixed as prakasha indicates that this book belongs to the period of Bhava prakash and arka prakasha text. Reference of Firanga and Rasakarpura are found quoted by author which suggests the period of the book composed during or after era of Bhavaprakasha.
Although the book is in summarized form still there is more specificity in the processes and other subject matter and gathered text matter from other texts which is important for aspect of experimentation and practical utility e.g. quoted suddha suta lakshana as reduction to 1/8th   after samskara, acquisition of semisolid nature of parada after swedana samskara, dvandvamelaka  aushadhi,  physical effects of sequential increment in quantity of grasa in parada, use of kashaya of drugs mentioned for mardana samskara of parada for kanchuka harana and shodhana of Shilajatu with water, detailed description of process of shilajatu shodhana etc. Author had contributed his own views in spite of compilation from other texts e.g. Author had quoted references of various indications and method of administration of marit as well as amarit svarna and given his opinion not to use svarna in amarit form. Author elaborated controversy regarding Kankushtha and mentioned it as plant origin from Himachal pradesh and mentioned its 2 types as Nalika and Renuka.                                                                                                                                                                                                                                                                                                                         At the start of each chapter the reason for its order is quoted. Author had quoted various Rasavarga by their popular names in society.
Author had collected references from Siddha sampradaya, Rasaratna samucchaya, Rasapaddhati, Rasaratnakara, Rasaprakasha sudhakara, Rasahrdaya tantra, Rasachintamani, Agnivessha (Charaka samhita), Shivagama shastra, Sharangdhara samhita, Rasraja lakshmi, Harita samhita, Bhavaprakasha, Rajanighantu, Rasamanjiri, Laghuyogatarangini, Yogatarangini, Bhalukitantra,Siddha Lakshishvara tantra, Vishnu purana, some un named texts and given opinion of Acharya Nagarjuna, Shri Narayana, Gauri, Devendra giri and Guru sampradaya.
Mainly Jarana and Parada samskara are explained in detail with variety of practically applicable easy and optional methods e.g. Swedana, mardana along with utthapana are given as optional methods for parada ashta samskara. Many references of Druti, Satva of individual drugs and their processing are mentioned. Criteria of classification of Rasavarga dravya is taken as importance of drugs for their use in Parada karma and procedures on Rasavarga dravya.
Various types of common procedures on Rasavarga dravya i.e. Drutikarana of sarva Loha, Ratna, Satva patana, Shodhana and Marana of Satva of many Rasavarga dravya, Shodhana of Sadharana Rasa, different method of Dhatu Shodhana, Drutimelana etc are mentioned. Dose, duration of administration, Pathya, Apathya during consumption of Rasakalpa, Rasavarga dravya is explained in detail.
Author had adopted easy, practically applicable methods only e.g. he suggests use of  Loha churna in place of patra for processing and opines to collect it with the help of chumbaka. As the author accepts scarcity of Kanta therefore he had mentioned Chumbaka in uparasa separately inspite of mentioning the prior one under Dhatu varga. Alternative methods for Parada Shodhana are found quoted as Svedana, mardana, urdhvapatana and patasarana or washing with aranala or urdhvapatana if one fails to do ashta samskara, quoted utthapana of parada by washing with hot water too.  Author had purposefully avoided Marana of precious Ratna and permitted to use their small pieces, particles generated during their shaping. Mentioned method of Drutikarana of Loha, Svarna, Rajata etc.
There are 11 different types of yantra along with their subtypes explained in the text. Author had discussed and cleared some controversies in the subject and given explanations too e.g. For removal of physical impurities in shilajatu apply method of  washing with water, then use common method of shodhana and for gunotkarsha as per indication use of bhavana with svarasa is advocated.
Processes in the book are well described e.g. in 1st chapter  while describing Garbhadruti  for preparation of Marita Bija, author clearly  mentioned methods of preparation of its ingredients i.e. Naga and Tapya bhasma whose methods of preparation are elaborated in subsequent chapters.

Practical Searchlight in Present Scenario

Today many ancient, recent scripts, compilatory scripts and academic text books on Indian alchemy (Dhatuvidya, Dhatuvada, Dehavada, Rasavidya /Rasashastra)  written in different era modified as per recent advances, need and availability  of drugs are available but very little part of it is in practice since more than 3 centuries.  Every text had some speciality and the same process is explained with various methods in different texts. This lag in practical utility of the knowledge of ancient alchemy is one of the barriers in understanding a part subject matter. Therefore the text which is compilatory, along with its contributions written in the late era of the ancient Indian Alchemy, when it was well in practice proves very important.
Remarks

Ayurved prakasha is an important text on Ancient Indian Alchemy in late era when it was well practiced. It is a compilatory text along with many important creations and modifications of its own. The subject matter of the text is focused on practical applicability, ease in performance and alternative methods of experimentation. Author had considered failures, complexities in experiments and availability of the drugs, importance of the subject matter in view of its practical utility. The text if elaborated properly had potential to change many concepts of science in current practice and is an important text for Ayurveda students.

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