Snuhi Ksheera (Spurge Latex): Benefits, Evidence & Safety

TL;DR

Snuhi ksheera is the milky latex of Euphorbia neriifolia, a plant Ayurveda classifies as an upavisha (mild poison). Traditionally it is used as a drastic purgative and applied to warts, and it coats the medicated thread in Ksharsootra therapy. Animal studies show anti-inflammatory effects, but the latex is caustic and unsafe without supervision. (53 words. Sources: Molecules review 2022; IAMJ review 2016; IJRPAS review.)

What it is

Snuhi ksheera is the white, milky latex (ksheera) that exudes from injured stems of Euphorbia neriifolia Linn., a succulent, thorn-bearing shrub of the Euphorbiaceae family known in Sanskrit as Snuhi (also Sehunda or Thuhar) and in English as the common milk hedge or Indian spurge tree. The latex is chemically distinct from the leaf or root: analyses have identified triterpenes including euphol, nerifoliol, neriifolene, taraxerol, β-amyrin, and cycloartenol. Ayurveda places Snuhi in the Sthavara Upavisha group, the "mild poisons" of plant origin, which means it is regarded as potent and usable only after proper handling and strictly under medical supervision. (Molecules review, 2022; IAMJ review, 2016)

Traditional use

Classical texts assign Snuhi strong purgative action. Charaka lists it among the shodhana (purificatory) plants used for therapeutic purgation (virechana); Sushruta places it in the Shyamadi gana and among the adhobhagahara (downward-acting) drugs; Vagbhata includes it in the Nikumbhadi gana. Its Ayurvedic energetics are described as katu (pungent) rasa, laghu-tikshna-snigdha guna, ushna virya, and katu vipaka, with kapha-vata-pacifying and dipana (appetizer) and rechana (purgative) actions.

Traditional applications of the latex include use as a drastic purgative in enlargement of the liver and spleen, dropsy, and chronic skin disorders. External application over warts (charmakila) to remove them; and, mixed with ghee, application to chronic wounds. The latex is also one of the three coatings, with Apamarga kshara (alkaline ash) and Haridra (turmeric) powder, on the medicated thread used in Ksharsootra therapy for fistula-in-ano (Bhagandara). All of this is traditional practice, not clinical proof of the latex alone. (IJRPAS review; IAMJ review, 2016)

What modern research says

Anti-inflammatory activity (animal studies)

A 2022 comprehensive review in Molecules summarizes animal experiments in which E. neriifolia latex showed anti-inflammatory activity: including one study at 400 mg/kg body weight and another in which latex at 500–750 mg/kg compared favorably with the standard drug diclofenac sodium. The same review notes reported cytotoxic and anti-arthritic activity of the latex. These are animal and laboratory findings; no human trials of the latex were identified. (Molecules review, 2022)

Ksharsootra therapy context (procedure-level evidence)

Snuhi latex is not used alone in Ksharsootra therapy: it is one ingredient of a medicated surgical thread. A summary of the peer-reviewed literature notes that the Indian Council of Medical Research evaluated Ksharsootra for fistula-in-ano across multiple institutes and found recovery slower than with surgery but a better long-term outlook. A later prospective observational study comparing Ksharsootra with LIFT and fistulectomy reported mixed results, including higher recurrence with Ksharsootra at longer follow-up. This evidence concerns the whole procedure, not snuhi latex by itself, and results are mixed. (Encyclopedia/Molecules summary)

What the evidence does not show

There are no published human clinical trials testing snuhi latex alone for any condition. Traditional claims, wart removal, wound healing, purgation, rest on classical authority and folk practice, not on controlled human data.

Safety & contraindications

This is the most important section of this article. Snuhi is an upavisha (mild poison) in Ayurveda, and the latex is caustic.

FAQs

What exactly is snuhi ksheera?

It is the milky white latex obtained from the stems of Euphorbia neriifolia, a spiny succulent shrub called Snuhi in Ayurveda. "Ksheera" means milk, referring to the sap's appearance. It is chemically and therapeutically distinct from the plant's leaf or root, and Ayurveda classifies it as an upavisha: a mild poison requiring supervised use. (Molecules review, 2022)

Why is snuhi called a mild poison (upavisha)?

Because the latex is caustic and powerfully purgative: in excess it causes severe purgation, it burns skin and mucous membranes, and eye contact can cause blindness. Ayurveda's upavisha category marks drugs that are useful but dangerous without proper dose, preparation, and supervision: snuhi is a textbook example. (IAMJ review, 2016)

Is snuhi latex used in Ksharsootra treatment for fistula?

Yes: as one component. The Ksharsootra thread is coated with snuhi latex, Apamarga kshara (alkaline ash), and Haridra (turmeric) powder, and is used by trained surgeons for fistula-in-ano. The ICMR evaluated this procedure across multiple institutes. But the evidence is about the whole procedure, not the latex alone, and later comparative studies showed mixed results: it is a surgical therapy, not a home remedy. (Encyclopedia/Molecules summary)

Can snuhi latex remove warts?

Traditional practice applies the latex to the base of warts (charmakila) to remove them, and the latex is described as useful for cutaneous eruptions. However, no clinical trials verify this, and the same caustic property that attacks warts can burn surrounding skin. Do not attempt this without a qualified practitioner. (IJRPAS review)

Is snuhi ksheera safe in pregnancy?

No: it is explicitly contraindicated in pregnancy in Ayurvedic sources, as well as in children and the elderly. Its drastic purgative and irritant actions make it unsafe in these groups. Anyone pregnant or breastfeeding must avoid it. (LiveAyurved Snuhi monograph)

What should I do if snuhi latex gets in my eyes?

Treat it as an emergency: rinse the eye immediately and continuously with clean water and seek urgent medical care, as the latex can cause severe injury or blindness. This is a well-documented hazard of the plant: prevention (gloves, keeping the plant away from the face, never letting children handle it) is essential. (Snuhi uses and pharmacology)

Sources

Tier 1 — peer-reviewed journals

Tier 3 — tertiary compilations

This article is for educational purposes only and is not medical advice. Snuhi latex is a caustic mild poison — never use it without direct supervision from a qualified practitioner, and keep it away from children, the eyes, and the face.