LAISHA · DRAVYAGUNA

Gauripashana

गौरीपाषाण

Arsenic trioxide, As2O3. A white, almost tasteless solid, historically the classic homicidal poison of Europe and Asia.

Parthiva · mineral origin · Sadharana Rasa

SHODHANA — NO MINERAL DRAVYA IS USED RAW

Swedana in kushmanda swarasa, in the juice of jayanti, or in godugdha by the dola yantra, repeatedly. Arsenic remains arsenic after shodhana, and the texts that prescribe it do not claim otherwise.

Benefits & side effects

TRADITIONAL VIEW, WITH SAFETY LIMITS

Hindi name: Sankhiya

What the texts say Gauripashana does

What the evidence says. Traditional use is documented in the Rasashastra texts. Modern evidence about this dravya is largely toxicological rather than therapeutic.

Side effects and limits

This is arsenic trioxide - white arsenic, historically the commonest agent of deliberate poisoning in the world. It is soluble, nearly tasteless, and lethal in quantities a kitchen spoon would hold. It is a medicine only after shodhana, only within a yoga, only in the hands of a practitioner trained in Rasashastra, and the classical quantities are among the smallest in the whole literature for exactly that reason. Arsenic poisoning from Ayurvedic preparations is documented by the CDC. This entry records what the texts prescribe; it is not a recommendation. Anyone pregnant, on medication or managing a diagnosed condition should speak to a doctor or a qualified practitioner first.

Avoid or ask first: Absolutely not used in the raw, unprocessed state by any route.; Not used outside specialist Rasashastra practice.; Not used in children.; and more below.

A traditional classification, not a recommendation. The full safety record is below.

Matra and anupana

AS THE CLASSICAL TEXTS AND THE API PRESCRIBE

Shuddha churna3–6 mg, within a yoga, specialist use only
AnupanaMadhu
KalaAs the yoga directs

Among the smallest quantities in the classical literature, and prescribed only by a practitioner trained in Rasashastra. Never the raw mineral.

Reported from Sharangadhara Samhita and the Ayurvedic Pharmacopoeia of India. Laisha states what the texts prescribe; it does not recommend. No quantity here is adjusted for a particular person — not for agni, koshtha, bala, age, pregnancy, kidney or liver function, or anything already being taken.

Rasapanchaka

Rasa
KatuKashaya
Guna
LaghuTikshnaVyavayi
ViryaUshna
VipakaKatu
PrabhavaNamed in the texts for kushtha, for jwara and as a rasayana in minute quantity. Modern medicine independently uses arsenic trioxide to treat acute promyelocytic leukaemia, which is a genuine convergence and not a justification for traditional dosing.
DoshakarmaKaphavatahara.

Katu and kashaya with ushna virya and katu vipaka.

Karma and part used

KushthaghnaJwaraghnaKrimighnaRasayana

These are the actions the classical texts record. They are statements about what the tradition holds, and this library does not restate them as findings about a human body.

Upayukta angaShuddha gauripashana, and only within a yoga
Why it mattersThe processed article, never the raw mineral. A lot received raw is a different material from the one the formula names.

Paryaya

SomalSankhyaShweta shankhyaMalla

Malla is the name in commonest use in the market and the one most likely to appear on an invoice.

Names, by language

EnglishWhite arsenic
HindiSankhiya
KannadaGauripashana
TamilSankhiya
TeluguSankhiya
MalayalamSankhiya
MarathiSankhiya
GujaratiSankhiya
BengaliSankhiya
OdiaSankhiya
UrduSankhiya

Classical references

Rasa Ratna Samuccaya
Chapter 3 (Uparasa Varga) and Chapter 4 (Sadharana Rasa Varga)
Gauripashana is among the sadharana rasa; the swedana shodhana in kushmanda swarasa is given.
Rasa Hridaya Tantra
The chapters on the rasa dravya
Describes the arsenic minerals and the quantities, which are among the smallest in the literature.
Ayurvedic Pharmacopoeia of India
Part I, mineral and metallic preparations
Records the processed article for specialist use.

Formulations it appears in

Sameerpannag RasaAn ingredient.
Malla SinduraNamed for the dravya.

Adulterants and substitutes

Gauripashana, Haratala and Manahshila are all arsenic minerals and are confused with one another, but Gauripashana is the trioxide and is far more soluble and far more acutely toxic than the two sulphides. Substituting it for either is not a quality problem but a fatal one, and the reverse substitution makes a preparation inert. White arsenic is also almost tasteless, which is why it was the poison of choice for four centuries.

Identity

Arsenic trioxide, As2O3. A white, almost tasteless solid, historically the classic homicidal poison of Europe and Asia.

A WAY TO REMEMBER IT

Gauripashana is Gauri's stone - Gauri being the fair one, for the whiteness. Sankhya and Somal are the trade names. That a poison this lethal carries the name of a goddess is a reminder that the classical names describe appearance and not danger.

What the tradition holds

Gauripashana is listed among the sadharana rasa of the Rasa Ratna Samuccaya, with a shodhana and with quantities among the smallest given anywhere in the literature. That is what the tradition records.

Constituents. Arsenic trioxide, As2O3. A white, almost tasteless solid, historically the classic homicidal poison of Europe and Asia.

What the evidence says

StatusTraditional use is documented in the Rasashastra texts. Modern evidence about this dravya is largely toxicological rather than therapeutic.
SuggestedThe dravya has a defined place and a defined shodhana in the classical Rasashastra literature, and the processed form has a pharmacopoeial standing in India. That is a standard for the material, not evidence of an effect in a body.
Not establishedThere is not enough good clinical evidence to establish an effect on any named health condition. Long traditional use is not a substitute for that evidence, and this library does not present it as one.
The honest gapPublished analyses of preparations containing this dravya rarely record whether shodhana was performed or how, so a result cannot be attributed to the processed article rather than the raw mineral.

Safety

This is arsenic trioxide - white arsenic, historically the commonest agent of deliberate poisoning in the world. It is soluble, nearly tasteless, and lethal in quantities a kitchen spoon would hold. It is a medicine only after shodhana, only within a yoga, only in the hands of a practitioner trained in Rasashastra, and the classical quantities are among the smallest in the whole literature for exactly that reason. Arsenic poisoning from Ayurvedic preparations is documented by the CDC. This entry records what the texts prescribe; it is not a recommendation. Anyone pregnant, on medication or managing a diagnosed condition should speak to a doctor or a qualified practitioner first.

ContraindicationsAbsolutely not used in the raw, unprocessed state by any route.
Not used outside specialist Rasashastra practice.
Not used in children.
Not used where there is kidney or liver disease.
InteractionsNo specific drug interaction is documented for this dravya. That is the honest state of the evidence, not a statement that none exists - the mineral dravya have almost never been studied for interaction with modern medicines.
Pregnancy and breastfeedingAbsolutely contraindicated in pregnancy and in breastfeeding. Arsenic crosses the placenta and is a developmental toxin and a carcinogen.

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What this is not

Sources

Rasa Ratna Samuccaya - the classification of the rasa dravya and their shodhana
National Institute of Indian Medical Heritage · read 2026-09-29
The classical grouping of the dravya among the maharasa, uparasa, sadharana rasa or loha, and the shodhana it prescribes.
https://niimh.nic.in/ebooks/
The Ayurvedic Pharmacopoeia of India, Part I - mineral and metallic preparations
Pharmacopoeia Commission for Indian Medicine and Homoeopathy, Ministry of Ayush, Government of India · read 2026-09-29
The official Indian pharmacopoeial standing of the dravya and the processed form that is the pharmacopoeial article.
https://pcimh.gov.in/
Sharangadhara Samhita, Madhyama Khanda - the matra of the kalpanas
Sharangadhara Samhita, Madhyama Khanda · read 2026-09-29
The classical quantity for each preparation, cited to where the number comes from.
https://niimh.nic.in/ebooks/esharangadhara/
Lead, mercury and arsenic in Ayurvedic medicines
Centers for Disease Control and Prevention (CDC) · read 2026-09-29
Documented heavy-metal poisoning traced to Ayurvedic preparations, from a body outside India.
https://www.cdc.gov/nceh/lead/
Toxicological profiles for the heavy metals
Agency for Toxic Substances and Disease Registry (ATSDR) · read 2026-09-29
The toxicology of the element itself, independent of any tradition's account of it.
https://www.atsdr.cdc.gov/toxprofiledocs/
Substance information and classification
European Chemicals Agency (ECHA) · read 2026-09-29
The European classification of the substance, so a reader sees where regulators differ.
https://echa.europa.eu/information-on-chemicals
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