Pharmaceutico-Analytical Study of Talakeshwara Rasa: A Classical Kupipakwa Rasayana

Abstract

Rasashastra is the Ayurvedic science that primarily deals with Mercury and its pharmaceutical processing, Talake?hwara Rasa is a classical Sagni–Sagandha Bahirdhooma Kupipakwa Rasayana described in Rasa Yoga Sagara, indicated mainly in chronic skin disorders like Kushta. The formulation comprises Shuddha Parada and Shuddha Gandhaka in the form of Dwiguna Kajjali, to which Shuddha Haratala and Shuddha Navasadara are added and triturated. The mixture is subjected to Bhavana with Bakuchi Kashaya and Arka Ksheera, followed by Kupipaka under controlled graded heating. Pharmaceutical evaluation showed attainment of classical Siddhi Lakshanas during Kajjali preparation and Kupipaka. Analytical studies were carried out on Kajjali, Bhavita Kajjali, and both Kupipakwa products Kantastha and Talastha Talake?hwara Rasa. Physicochemical analysis revealed alkaline pH, low moisture content, and minimal ash values in Kajjali, Bhavita Kajjali, and Kantastha product, while the Talastha fraction showed comparatively higher ash and moisture content. XRD analysis confirmed transformation of ?-HgS in Kajjali to thermodynamically stable ?-HgS in Kantastha Talake?hwara Rasa. SEM-EDS demonstrated the presence of Hg, S, and As. Particle size analysis showed sub-micron range particles, and FTIR confirmed retention of the inorganic framework with incorporation of functional groups due to Bhavana. NPST exhibited characteristic phased color changes confirming formulation identity. Overall the pharmaceutical and analytical evaluation establishes Talake?hwara Rasa as a stable, standardized mineral-based Kupipakwa Rasayana. The study validates classical Rasashastra principles through modern analytical parameters and provides a scientific basis for its therapeutic use in Kushta.

Introduction

The quality of pharmaceutical products in Ayurveda depends on proper raw material identification and processing. Ancient ?ch?ryas detailed purification (?odhana), detoxification, and incineration methods for metals and minerals to ensure safety, enhance bioavailability, and therapeutic efficacy.

Talake?hwara Rasa is a mineral-based Kupip?kva Ras?yana described in Rasayoga S?gara, containing ?uddha P?rada, ?uddha Gandhaka, ?uddha H?rat?la, and ?uddha Navas?dara, processed with B?kuc? Ka??ya and Arka K??ra as Bh?van? dravyas. It is primarily used for managing various types of Ku??ha (skin disorders).

Aims and Objectives:

• Compile classical references for Talake?hwara Rasa.

• Prepare it according to classical methods and standard operating procedures.

• Perform physico-chemical analyses of Kajjali, Bh?vita Kajjali, and Talake?hwara Rasa.

Formulation and Methods:

• Talake?hwara Rasa is prepared via Kupip?kwa method, with sequential purification of raw minerals and trituration to form Kajjali.

• Bh?van? (levigation) is done with Bakuchi Kashaya and Arka Ksheera.

• Final product is obtained through Kramagni Kupipaka and cooled before collection.

Pharmaceutico-Analytical Findings:

• Purification and trituration processes result in measurable weight changes, e.g., Hingula Mardana with Nimbu Swarasa showed 108.93% yield.

• Urdhwapatana extraction of Parada yielded 72.13%, and Shodhana steps achieved 95.45% yield.

• Gandhaka Shodhana in Godugdha resulted in a gradual reduction to 390?g from 500?g.

The study confirms that systematic purification, Bh?van?, and Kupip?kwa methods produce a therapeutically potent and pharmaceutically standardized Talake?hwara Rasa.

Conclusion

The present study on Talake?hwara Rasa, a Kupip?kva Ras?yana, systematically evaluated its classical pharmaceutical preparation and modern analytical characteristics. The formulation, prepared using Dviguna Kajjal?, ?uddha H?rat?la, and Navas?dara with B?kuc? Ka??ya and Arka K??ra as Bh?van? dravyas, was found to be chemically stable, homogeneous, and pharmaceutically sound. Classical Rasa??stra procedures ensured effective detoxification, incorporation of bioactive constituents, and formation of a stable mercuric sulfide matrix. The K???astha fraction fulfilled classical Siddhi Lak?a?as and demonstrated superior quality and safety compared to the residual T?lastha fraction. Analytical investigations confirmed phase transformation from ?-HgS to thermodynamically stable ?-HgS, uniform sub-micron particle size, minimal impurities, and enhanced bioavailability. These findings validate the effectiveness of the classical Kupip?ka process. Overall, Talake?hwara Rasa exhibits potential Ras?yana, antimicrobial, anti-inflammatory, and dermatological benefits. The study bridges classical Ayurvedic principles with modern analytical evidence and provides a strong foundation for standardization, quality assurance, and future pharmacological, toxicological, and clinical evaluation.

References

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Copyright

Copyright © 2026 Dr. Sumant Dayanand Gunaga, Dr. Ravi R. Chavan, Dr. Lalitha. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.