Kshar is a plant-ash alkaline preparation used in classical Ayurvedic manufacturing, supplied as a GMP-certified intermediate for licensed formulators.
Kshar refers to a class of alkaline preparations obtained by incinerating specific plant materials, dissolving the resulting ash in water, filtering the solution and evaporating the filtrate to yield a concentrated alkaline product. Recognised in Sharangdhar Samhita and catalogued in the Ayurvedic Formulary of India, Kshar preparations are regulated intermediates in GMP-certified Ayurvedic manufacturing.
Classical Ayurvedic texts divide Kshar into two broad groups: Antahparimarjana Kshar, intended for internal administration, and Bahirparimarjana Kshar, for external topical use. Sharangdhar Samhita provides detailed preparation protocols, specifying the plant source, incineration conditions, the required number of filtration passes and the need to test the final product before clinical use. The Rasa Tarangini and Bhaishajya Ratnavali echo these protocols and extend the list of permitted plant sources.
The alkaline character of Kshar derives primarily from potassium carbonate and potassium hydroxide present in plant ash. The concentration and purity of these alkaline compounds determine the functional properties of the preparation. Classical formulators addressed this by prescribing the number of filtration passes, a parameter that modern Schedule T manufacturers translate into documented, in-process controls that can be verified during audit.
For a brand owner or distributor sourcing Kshar today, the classical literature provides the essential legitimacy baseline. Regulators conducting inspections under the Drugs and Cosmetics Act expect that any commercially supplied Kshar traces directly to a named preparation in the Ayurvedic Formulary of India or a recognised classical compendium.
The manufacturing sequence begins with procurement and documentary authentication of the specified plant raw material. Under Schedule T GMP, every incoming raw material must undergo identity testing and be formally released before it enters the production stream. The authenticated material is then incinerated under controlled conditions to produce ash of consistent alkalinity.
The ash is dissolved in a measured volume of purified water, stirred thoroughly and allowed to settle. The supernatant is filtered through specified filter media, and the filtration is repeated the number of times prescribed in the classical source for that named Kshar preparation. The filtered solution is then evaporated at controlled temperatures until a concentrated alkaline mass or powder is obtained.
Every step must be covered by written batch manufacturing records, environmental monitoring entries and in-process quality checks. A buyer sourcing from a GMP certified contract manufacturer is entitled to request sight of these records as part of routine supplier qualification. A supplier who cannot produce them is not operating in full Schedule T compliance.
Kshar and Shodhit Dravya preparations form a defined product category within the classical Ayurvedic formulation system. Commonly encountered preparations include Apamarga Kshar, derived from Achyranthes aspera; Yava Kshar, derived from Hordeum vulgare; and Sarjika Kshar, derived from Suaeda fruticosa. Each carries its own pharmacopoeial monograph in the Ayurvedic Pharmacopoeia of India.
The choice of named Kshar for a formulation is determined by the classical recipe being reproduced. Substituting one Kshar for another without classical authority is not permissible under the Drugs and Cosmetics Act for a product claiming to follow a Shastrayoga formulation. A compliant bulk supply partner will supply each named Kshar separately with its pharmacopoeial reference and will not offer generic alkaline ash as a universal substitute.
The Ayurvedic Pharmacopoeia of India specifies quality parameters for each named Kshar preparation. Standard parameters include alkalinity expressed as a percentage of potassium carbonate equivalent, total ash, loss on drying, pH of a defined aqueous solution and heavy metal limits covering lead, arsenic, cadmium and mercury.
Heavy metal assessment is particularly important because incineration concentrates minerals naturally present in the plant material. A GMP-compliant manufacturer tests each batch against the limits in the applicable monograph and provides laboratory test reports confirming compliance. Buyers should confirm that the testing was performed by an accredited laboratory and that the report identifies the specific test method used.
Microbial limits, including total viable aerobic count, yeast and mould count and the absence of specified pathogens such as Salmonella and Escherichia coli, are mandatory for Kshar preparations intended for incorporation into internal dosage forms. An intermediate tested and released at source gives the downstream formulator a stronger compliance position at the finished product stage.
For a licensed manufacturer incorporating Kshar into a named classical formulation, the quality of the intermediate's documentation directly affects the completeness of its own product dossier. If the Kshar intermediate arrives with a certificate of analysis from a Schedule T-compliant facility, the downstream manufacturer can reference that certificate in its own batch records, provided its incoming quality control protocol permits this and the certificate covers all required parameters.
Sourcing from a supplier who holds both a GMP certificate and an AYUSH manufacturing licence covering the specific Kshar preparation creates a linked, verifiable audit trail. This matters during AYUSH inspections and equally when international buyers request traceability documentation in the context of an export clearance or a third-party audit.
Before placing a first bulk order for any named Kshar, a buyer should confirm the classical source reference, check that the AYUSH licence covers the specific preparation, request a representative certificate of analysis and, where available, a pre-shipment sample for in-house evaluation. These are standard requirements in GMP-regulated supply chains and any compliant supplier should be able to fulfil them promptly and without restriction.
Raasa Ayurveda has operated from Kanpur, Uttar Pradesh for seventeen years, holds GMP certificate D-5755/09 and AYUSH manufacturing licence A-4177/2009, and routinely supplies samples before bulk confirmation. To discuss your requirement for any named Kshar preparation, call +91 9415128217 or write to raasaayurveda@gmail.com. A certificate of analysis is provided with every consignment.
Antahparimarjana Kshar is intended for internal administration and Bahirparimarjana Kshar is for external topical use. The distinction is classical and determines which pharmacopoeial monograph governs quality specification. A bulk buyer should confirm which category applies to the Kshar they are sourcing before incorporating it into a formulation, as the applicable quality limits may differ.
The Ayurvedic Formulary of India and Ayurvedic Pharmacopoeia of India include preparations such as Apamarga Kshar, Yava Kshar and Sarjika Kshar, each with its own monograph specifying source plant, preparation method and quality parameters. Buyers should request the specific monograph reference for any Kshar they source to confirm regulatory compliance.
Request alkalinity as percentage potassium carbonate equivalent, total ash, loss on drying, pH of the aqueous solution, and heavy metal content covering lead, arsenic, cadmium and mercury. Confirm that tests were performed by an accredited laboratory and that results comply with limits in the applicable Ayurvedic Pharmacopoeia monograph for that named preparation.
Yes. A contract manufacturer holding an AYUSH manufacturing licence covering the Kshar category and the relevant finished formulation category can supply both. This simplifies batch record cross-referencing and reduces documentation gaps during regulatory inspection. Confirm that the AYUSH licence explicitly covers both the intermediate and the finished product category before committing to an order.
Raasa Ayurveda, 49/72-A, Naughara, Kanpur 208001, Uttar Pradesh, India. Telephone +91 9415128217. Email raasaayurveda@gmail.com.