Yashad Bhasma is an Ayurvedic zinc preparation made through shodhana and marana cycles. This guide explains its preparation.
Yashad Bhasma is a classical Ayurvedic preparation made from zinc through repeated cycles of purification (shodhana) and calcination (marana) as described in Rasa Tarangini and allied rasashastra texts. The resulting fine white powder is included in formulations with traditional respiratory, metabolic and dermatological applications, and is available for bulk supply from GMP certified manufacturers.
Rasashastra literature, particularly Rasa Tarangini authored by Sadananda Sharma, provides detailed guidance on the preparation of Yashad Bhasma. Zinc, referred to as yashada in classical texts, is classified as an upadhatu and is processed through the standard rasashastra sequence of shodhana followed by marana. The texts specify the corrective herbs and media used in each stage and describe the quality criteria the finished bhasma must meet.
The Ayurvedic Pharmacopoeia of India has incorporated Yashad Bhasma as a recognised preparation, providing standardised analytical parameters that a manufacturer must demonstrate compliance with before releasing product to the market. This regulatory recognition means the preparation can be manufactured and supplied under an AYUSH manufacturing licence that covers the Bhasma-Pishti category.
Traditional Ayurvedic references describe Yashad Bhasma as having properties aligned with respiratory, metabolic and skin-related therapeutic traditions. For B2B buyers, these traditional descriptions are relevant for positioning the preparation within product lines, but no medical claims should be made in labelling or promotional material.
Shodhana is the purification stage. Raw zinc is processed with specific herbal decoctions and media to remove unwanted impurities and prepare the metal for the calcination steps that follow. The shodhana process also makes the zinc more amenable to the subsequent marana cycles by altering its physical and chemical state.
Marana is the calcination stage, in which the purified zinc is mixed with specified herbal juices or media, formed into cakes, and subjected to heat in a puta (a controlled firing using cow dung cakes or an equivalent heat source). The resulting material is ground and the process is repeated multiple times. Each cycle refines the product, reduces particle size and advances the chemical transformation of the metal.
The number of marana cycles varies according to the classical reference followed and the specific formulation requirements. What determines quality is not simply the number of cycles but whether the finished bhasma passes the prescribed classical tests: nishchandratva (absence of metallic lustre), varitara (flotation on water) and rekhapurnata (penetration of fingerprint ridges). A GMP certified manufacturer documents each stage and conducts quality checks between cycles.
Shodhana media and marana excipients affect the final properties of the bhasma. A manufacturer should be transparent about the preparation route and provide documentation of the process, particularly for buyers who need to understand the product's composition for import declarations or product registration.
Between successive marana cycles, a step called bhavana is typically applied. The ground material is impregnated with specified herbal juices or decoctions, dried and then subjected to the next firing cycle. Bhavana introduces the properties of the herbal medium into the bhasma and assists further particle size reduction. The choice of bhavana medium varies between classical references and between manufacturers, and asking the manufacturer to confirm this detail allows buyers to assess the authenticity and reproducibility of the preparation route they are sourcing.
The Ayurvedic Pharmacopoeia of India sets specific analytical standards for Yashad Bhasma covering both classical organoleptic tests and modern instrumental methods. A Bhasma-Pishti supplier should be able to provide a certificate of analysis against these reference parameters for every batch supplied.
Classical quality tests include nishchandratva (no metallic lustre when rubbed on glass), varitara (floats on water without sinking) and rekhapurnata (fills fingerprint ridges). Apunarbhava and niruttha confirm irreversible transformation of the base metal and are considered the definitive tests for complete incineration. Apunarbhava is demonstrated by dissolving the bhasma in acid and confirming that the original metal cannot be recovered from solution; niruttha confirms that the material does not revert to its pre-processed state on re-heating. Both together verify the irreversibility of calcination, which distinguishes a correctly processed bhasma from material that has undergone incomplete transformation.
Modern analytical parameters include loss on drying, ash value, acid-insoluble ash and zinc content determined by atomic absorption spectroscopy or ICP-OES. Particle size analysis confirms the bhasma has been reduced to the micron or submicron range. Heavy-metal testing for arsenic, lead, mercury and cadmium is mandatory: the preparation must comply with limits set by the Ayurvedic Pharmacopoeia of India and, for export, with the importing country's standards.
Microbial limits testing is required under Schedule T of the Drugs and Cosmetics Act. Total aerobic count, total yeast and mould count, and pathogen absence tests must meet defined thresholds. A certificate of analysis that omits microbiological data is incomplete and should prompt further enquiry.
Before committing to a bulk order, confirm that the manufacturer holds a valid AYUSH manufacturing licence covering the Bhasma-Pishti category and a current GMP certificate. These credentials confirm that the facility has been inspected and approved for Ayurvedic manufacturing under Schedule T conditions.
Request a sample alongside the batch-specific certificate of analysis. Independent verification of the sample against the CoA gives you confidence before committing to full quantities. Reputable manufacturers operating under contract manufacturing arrangements support pre-order sampling as a matter of standard practice.
For buyers intending to export, clarify the heavy-metal test data upfront. Ask whether the manufacturer can provide reports from an NABL-accredited laboratory and whether they can support country-specific documentation requirements. Different markets apply different acceptance criteria for zinc content and heavy-metal limits, and this documentation needs to be in place before shipment.
If Yashad Bhasma is one formulation in a broader product range that also includes preparations from Ras Rasayana or Vati, working with a single GMP certified partner simplifies quality oversight and creates consistency in documentation across your full catalogue.
Raasa Ayurveda in Kanpur manufactures Yashad Bhasma and other classical Bhasma-Pishti preparations under AYUSH licence A-4177/2009 and GMP certificate D-5755/09. To request a sample with a certificate of analysis or to discuss your product requirements, contact the team at +91 9415128217 or raasaayurveda@gmail.com.
Yashad Bhasma is traditionally included in formulations associated with respiratory, metabolic and dermatological product categories. For B2B buyers, it is a classical rasashastra ingredient with pharmacopoeial standards. No medical claims should be made in product labelling or marketing material.
The number of marana cycles depends on the classical reference text followed and whether intermediate quality checks are passed. The finished product must satisfy classical tests including nishchandratva and varitara. Ask the manufacturer for documentation of the preparation route and the number of cycles completed.
Yes. Even though zinc is the base ingredient, arsenic, lead, mercury and cadmium must be tested and must fall within permitted limits set by the importing country. Request an NABL-accredited laboratory report and country-specific compliance documentation from your manufacturer before shipment.
Minimum order quantities depend on the manufacturer's batch size, production schedule and formulation requirements. Contact Raasa Ayurveda directly at +91 9415128217 to discuss quantities, sample availability and lead times applicable to your specific requirement.
Raasa Ayurveda, 49/72-A, Naughara, Kanpur 208001, Uttar Pradesh, India. Telephone +91 9415128217. Email raasaayurveda@gmail.com.