Rasnadi Kwath: Benefits, Evidence & Safety

TL;DR

Rasnadi kwath (Cheriya Rasnadi Kashayam) is a 14-ingredient decoction from the Sahasrayoga tradition led by rasna (Pluchea lanceolata), indicated for rheumatism (amavata) and vata disorders. Animal studies of rasna show anti-inflammatory and anti-arthritic effects, but no human trials of the formulation itself were found. (44 words. Sources: Sahasrayoga via AyurMed Guide; Srivastava et al. 1990; Bhardwaj et al. 2026.)

What it is

Rasnadi kwath, also called Cheriya (small) Rasnadi Kashayam or Rasna-erandadi Kashayam, is a classical 14-ingredient herbal decoction referenced from Sahasrayoga, the Kerala Ayurvedic compendium. The lead drug is Rasna, which consists of the dried leaf and roots of Pluchea lanceolata (its official substitute is Alpinia galanga), described in Ayurvedic terms as tikta rasa, guru guna, ushna virya and katu vipaka, pacifying Kapha and Vata. (Bimbima: Rasnadi Kashayam)

The 14 ingredients, per the Sahasrayoga-based composition:

(AyurMed Guide: Rasnadi Kashaya; Asoka Pharmaceuticals kashayam table)

Note that botanical identifications vary between regional traditions, most notably Sahachara and Rasna itself, so products sold under the same name can differ; always check the label. (Asoka Pharmaceuticals)

As a kwath, the coarse-powdered ingredients are simmered as a decoction; the classical kwatha method uses 1 part drug with 16 parts water, reduced to one-eighth of the volume. The traditional vehicle (anupana) for this kashaya is ghee (sarpi) or oil (thaila). (Wisdomlib: WJPR review; AyurMed Guide)

Traditional use

Rasnadi kwath is indicated in amavata (rheumatism) and vataroga (disorders of vata), per the Sahasrayoga-based description. More specifically it is given for pain in the thigh (uru), hip/triad region (trika), back (prishtha) and flanks (parshva), locked jaw (hanu shoola), swelling (shopha) and vatarakta (a gout-like vata–rakta disorder): the same indications listed for its twin-named formulation Rasnairandadi Kashayam. (Bimbima; AyurMed Guide) These are classical indications, not trial-proven effects.

What modern research says

Anti-inflammatory principle of rasna (animal study, 1990)

Researchers at CDRI Lucknow tested an ethanolic extract of Pluchea lanceolata in experimental models, found significant anti-inflammatory activity, and isolated taraxasterol acetate as the active principle: among the earliest pharmacological reports on the lead drug. This was preclinical work (animal models, plus a clinical component the abstract does not detail), published in the International Journal of Crude Drug Research. (Srivastava et al., Int J Crude Drug Res 28:135–137, 1990)

Anti-arthritic effects in rats (animal study, 2026)

A 2026 study in an adjuvant-induced rheumatoid-arthritis model in Wistar rats reported that aqueous and ethanolic extracts of P. lanceolata reduced paw volume and arthritic scores and lowered inflammatory markers (IL-1β, IL-6, TNF-α and CRP), with quercetin, isorhamnetin and linalool proposed as candidate actives from accompanying in-vitro and in-silico work. Promising, but a rat study of extracts: not a human trial of the kwath. (Bhardwaj et al., SAGE 2026)

Rasna phytochemistry and pharmacology (review, 2012)

A review in Fitoterapia surveyed rasna's chemistry, triterpenoids, sterols, flavonoids and lactones, and the mainly preclinical literature on its anti-inflammatory and anti-arthritic constituents. It treats rasna as a "rasayana" (rejuvenative) drug of Ayurveda with a consistent preclinical signal but no clinical trials. (Srivastava & Shanker, Fitoterapia 2012)

Eranda root (supporting ingredient)

The root of Ricinus communis, the second-named drug, showed anti-inflammatory effects in rats (carrageenan, bradykinin and dextran paw-oedema models) along with free-radical-scavenging activity in the commonly cited Ilavarasan et al. 2006 study. Animal evidence only. (Springer review of Ricinus communis)

Overall assessment

Modern evidence for Rasnadi kwath is entirely ingredient-level and preclinical: animal studies of rasna and eranda root support the traditional anti-inflammatory rationale, but no published human clinical trial of the Rasnadi kwath formulation itself was found. Claims of proven clinical efficacy for the formulation go beyond the evidence.

Safety & contraindications

FAQs

What is Rasnadi kwath made of?

A 14-ingredient Sahasrayoga decoction led by rasna (Pluchea lanceolata) with eranda root, bala, sahachara, shatavari, dusparsha, vasa, guduchi, devadaru, ativisha, musta, kokilaksha, shati and shunthi. It is also sold as Cheriya Rasnadi Kashayam or Rasna-erandadi Kashayam. Regional traditions may substitute some botanical identities, so labels can vary. (AyurMed Guide; Asoka Pharmaceuticals)

What is it used for in Ayurveda?

It is indicated for amavata (rheumatism) and vataroga: including thigh, hip, back and flank pain, locked jaw, swelling and vatarakta. The traditional vehicle is ghee or oil. These are classical indications; no clinical trials have tested them. (Bimbima; AyurMed Guide)

Is Rasnadi kwath the same as Rasnairandadi kwath?

Effectively they are the same classical base: the 14-ingredient Sahasrayoga formula appears under both names (Rasna-erandadi Kashaya and Rasnairandadi Kashayam), with identical ingredient lists in the sources checked. Marketed products may still vary, so compare labels rather than names. (AyurMed Guide; Asoka Pharmaceuticals)

What does modern research say about rasna?

Animal studies are consistent: a 1990 CDRI study isolated the anti-inflammatory principle taraxasterol acetate from Pluchea lanceolata, and a 2026 rat study found reduced paw swelling and inflammatory markers with its extracts. A 2012 Fitoterapia review catalogued its triterpenoid, sterol and flavonoid chemistry. None of this is human evidence for the kwath. (Srivastava et al. 1990; Bhardwaj et al. 2026)

Are there human trials of Rasnadi kwath?

No published human clinical trial of the formulation was found. Evidence is limited to traditional use and preclinical studies of its lead ingredients: rasna's anti-inflammatory and anti-arthritic effects in animal models, plus a phytochemical review cataloguing its active constituents. Anyone claiming proven clinical efficacy for the formulation is overstating the evidence; practitioner guidance is advisable.

Is Rasnadi kwath safe?

No formulation-specific safety data exist. It contains processed Ativisha (Aconitum heterophyllum) and should only be used as a properly manufactured product under practitioner supervision. Avoid in pregnancy, lactation and children for lack of data, and verify the ingredient label since similarly named products differ.

Sources

This article is for educational purposes only and is not medical advice. No human trials of Rasnadi kwath were found; consult a qualified practitioner before use.