Shankha Vati: Benefits, Evidence & Safety

Safety warning: Shankha Vati is a herbomineral medicine containing purified mercury and vatsanabha (aconite, a poisonous herb). It must be used only under strict medical supervision: never self-prescribed, and never in pregnancy, breastfeeding or childhood.

TL;DR

Shankha Vati is a classical Ayurvedic tablet (Bhaishajya Ratnavali; Ayurvedic Formulary of India Part 1) built on shankha bhasma, calcined conch shell, calcium carbonate, traditionally used for indigestion, gas and abdominal pain. It also contains purified mercury and vatsanabha (aconite); an animal toxicity study found no toxicity-related changes, but it should only be used under strict medical supervision. (60 words. Sources: Kodlady et al. 2013; SDL monograph.)

What it is

Shankha Vati ("conch tablet") is a classical Ayurvedic herbomineral tablet described in the Bhaishajya Ratnavali (Agnimandya Rogadhikara) and included in the Ayurvedic Formulary of India (Part 1). Its base is shankha bhasma, conch shell calcined to an ash that is chiefly calcium carbonate, but it is not a simple calcium tablet. (Kodlady et al., Anc Sci Life 2013)

Per the classical recipe, the herbal–mineral base is triturated (48 g each) of chincha (tamarind) kshara, panchalavana (the five salts), shankha bhasma, hingu (asafoetida), shunthi (dry ginger), maricha (black pepper) and pippali (long pepper), levigated with fresh lemon juice (nimbu swarasa): to which are added 3 g each of **purified mercury (parada), purified vatsanabha (aconite, Aconitum spp.) and purified sulphur (gandhaka)**, i.e. kajjali plus vatsanabha. One manufacturer's standards monograph reports elemental assays of roughly 3–5 mg mercury, 3–5 mg sulphur and 28–35 mg calcium per tablet. (Planet Ayurveda: Shankh Vati, citing BR/AFI; SDL Shankhavati monograph; Kodlady et al. 2013)

Traditional use

Classically Shankha Vati is a digestive remedy, indicated for agnimandya (weak digestion), dyspepsia, anorexia, indigestion, flatulence/gas and abdominal pain (udarashula), as well as grahani-type digestive disorders. The classical texts describe it as balancing vata and pitta and stimulating digestive fire. (Planet Ayurveda: Shankh Vati) A formulation paper on a Turangaratnamala variant lists similar indications: agnimandya, indigestion, abdominal pain, flatulence and wasting conditions. (IAMJ review) These are classical indications, not trial-proven effects.

What modern research says

Preclinical toxicity study (animal study, 2013)

The most substantive modern study is a toxicity evaluation by Kodlady et al., presented in Ancient Science of Life proceedings. The authors explicitly note the formulation "contains a heavy metal i.e. Parada (mercury) and a poisonous herbal drug Vatsanabha (Aconitum chasmantum)" and that vatsanabha is used in it without tankana (borax). They tested both the classical recipe and a modified version in acute (OECD 425), 90-day chronic and 30-day recovery studies in animals, examining histopathology, biochemistry and hematology. No treatment-related changes were found, and the authors concluded the classical formulation was safe in the animal model. (Kodlady et al., Anc Sci Life 2013)

This is real safety data: but it is animal data on a specific preparation. It does not establish safety in humans, in pregnancy, in children, with long-term use, or for products from other manufacturers whose composition may differ.

Quality-control data (manufacturer monograph)

The SDL standards monograph for Shankhavati reports per-tablet elemental content of mercury 3.0–5.0 mg, sulphur 3.0–5.0 mg and calcium 28.0–35.0 mg, with the text referencing Bharat Bhaishajya Ratnakar. This is product-specific quality data, not a universal formulation standard: other manufacturers' tablets may differ. (SDL Shankhavati monograph)

Overall assessment

No published human efficacy trial of Shankha Vati was found. The available modern evidence consists of one animal toxicity study and manufacturer quality-control data. The traditional digestive indications remain traditional claims.

Safety & contraindications

FAQs

What is Shankha Vati?

A classical Ayurvedic herbomineral tablet (Bhaishajya Ratnavali; AFI Part 1) built on shankha bhasma, calcined conch shell, chiefly calcium carbonate, combined with tamarind alkali, five salts, lemon juice, asafoetida and trikatu, plus purified mercury/sulphur (kajjali) and purified vatsanabha (aconite). (Kodlady et al. 2013; Planet Ayurveda)

What is it traditionally used for?

Digestive complaints: weak digestion (agnimandya), dyspepsia, loss of appetite, indigestion, gas/flatulence and abdominal pain, plus grahani-type disorders. It is described classically as kindling digestive fire and balancing vata and pitta. These are traditional indications without human-trial confirmation. (Planet Ayurveda; IAMJ review)

Does Shankha Vati really contain mercury?

Yes. The classical recipe includes purified mercury (parada) triturated with sulphur as kajjali, alongside purified vatsanabha (aconite). One manufacturer's monograph assays roughly 3–5 mg of elemental mercury per tablet: product-specific data, not a universal standard. This is why unsupervised use is unsafe. (Kodlady et al. 2013; SDL monograph)

What is vatsanabha, and why is it in the formula?

Vatsanabha is Aconitum (aconite, monkshood): a poisonous herb used in Ayurveda only after classical purification processing, traditionally added in small, processed amounts to stimulate digestion. The peer-reviewed toxicity study confirms its presence in Shankha Vati and notes it is used without tankana (borax) in this formula. It is another reason this medicine requires expert supervision. (Kodlady et al. 2013)

Is Shankha Vati safe?

The honest answer: partially characterized. A 90-day animal toxicity study found no treatment-related changes with the classical preparation: but that is animal evidence, not human proof. It contains mercury and aconite, products vary by manufacturer, and there are no human safety trials. Use only under strict medical supervision; avoid in pregnancy, breastfeeding, childhood, and kidney or liver disease. (Kodlady et al. 2013)

How is it different from Shankha Bhasma?

Shankha Bhasma is the single ingredient, calcined conch-shell ash, chiefly calcium carbonate, used as an antacid-type drug. Shankha Vati is a compound tablet that uses shankha bhasma as its base but adds tamarind alkali, five salts, digestive herbs, kajjali (mercury–sulphur) and vatsanabha (aconite). They are different medicines with different safety profiles. (SDL monograph)

Sources

This article is for educational purposes only and is not medical advice. Shankha Vati contains mercury and aconite — never use it without strict medical supervision. Consult a qualified practitioner before using any Ayurvedic preparation.