LAISHA · DRAVYAGUNA

Chakramarda

चक्रमर्द

Senna tora (L.) Roxb.

Fabaceae · Senna

Benefits & side effects

TRADITIONAL VIEW, WITH SAFETY LIMITS

Hindi name: Chakvad

What the texts say Chakramarda does

What the evidence says. Traditional use is extensive and long recorded. Modern clinical evidence is limited.

Side effects and limits

Avoid or ask first: Pregnancy, in medicinal quantity.; Intestinal obstruction or undiagnosed abdominal pain.; Inflammatory bowel disease.

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

Photographs

Matra and anupana

AS THE CLASSICAL TEXTS AND THE API PRESCRIBE

Beeja churna3–6 g
Patraas shaka, in food quantity
AnupanaTakra · Ushnodaka
KalaAdhobhakta

Chiefly external in dadru. The seed in quantity is laxative.

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
KatuMadhura
Guna
LaghuRuksha
ViryaUshna
VipakaKatu
PrabhavaThe texts treat chakramarda as the dravya for dadru specifically, applied as a paste, and the paryaya Dadrughna records it.
DoshakarmaKaphavatahara. Being ushna it increases pitta.

Katu and madhura with ushna virya and katu vipaka.

Karma and part used

KushthaghnaKrimighnaDeepanaRechanaHridya

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 angaBeeja (the seed)
Patra (the leaf)
Why it mattersThe seed and the leaf. The leaf is eaten as a monsoon vegetable in many regions, and the seed is the medicinal article.

Paryaya

DadrughnaPrapunnadaEdagajaPadmataChakri

Dadrughna means destroyer of dadru, ringworm, and it is the paryaya that states the use. A student asked what chakramarda is for should be able to answer from the name.

Names, by language

EnglishSickle senna
SinhalaPeti thora
NepaliTapre
HindiChakvad
KannadaTagache
TamilThagarai
TeluguTantemu
MalayalamThakara
MarathiTakla
GujaratiKuvadiyo
BengaliChakunda
PunjabiPanwar
OdiaChakunda
UrduPanwar

Classical references

Bhavaprakasha Nighantu
Guduchyadi Varga
Gives the rasa, guna, virya and vipaka of chakramarda and records its use on the skin.
Charaka Samhita
Sutrasthana, chapter 4 (Shadvirechanashatashritiya)
Named among the dravya of the chapter.
Sushruta Samhita
Sutrasthana, chapter 38 (Dravyasangrahaniya)
Included among the dravya grouped by action.

Rasa, guna, virya, vipaka and karma are recorded as the classical texts give them, with the text and section named so a student can open the book and check. Where an exact chapter and verse could not be confirmed, this library names the section rather than inventing a number.

Formulations it appears in

Chakramardadi TailaNamed for the dravya, used externally.
Chakramarda ChurnaNamed for the dravya.
Dadrughna LepaChakramarda is the principal dravya.

Adulterants and substitutes

Senna obtusifolia is nearly identical and grows alongside it, and the two are collected together without distinction; they are chemically similar enough that this matters less than most substitutions here. Senna occidentalis, however, is a different matter — it is toxic to livestock and is sometimes collected with them, and it is worth separating.

Identity

Matched live against the GBIF backbone on 28 September 2026 at 99 per cent confidence. Cassia tora is a synonym. A weed of every monsoon field margin in India, and one a student can find and identify within minutes.

A WAY TO REMEMBER IT

Senna from Arabic sana. Tora is from the Sinhalese name. Chakra-marda means ringworm-crusher, which is the classical use and an easy hook.

What the tradition holds

Chakramarda is described in the Bhavaprakasha Nighantu, where its use on the skin is recorded. That is what the tradition holds and where it is written down, not a finding about what the seed does in a body.

Constituents. The seed carries anthraquinones including chrysophanol, emodin and rhein — the same class that makes senna purgative — along with the naphthopyrone toralactone.

What the evidence says

StatusTraditional use is extensive and long recorded. Modern clinical evidence is limited.
SuggestedHealth Canada publishes monographs covering Ayurvedic ingredients and permits specific traditional-use claims, which reflects a regulator accepting a documented tradition rather than a body of clinical trial evidence.
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 work is limited and rarely distinguishes Senna tora from Senna obtusifolia.

Safety

The leaf is eaten as a monsoon vegetable and the seed is used mostly on the skin. Taken internally it is a purgative because of its anthraquinones, and prolonged use of any anthraquinone laxative causes the bowel to rely on it. Senna occidentalis, which can be collected with it, is documented as toxic to livestock and to children, so knowing which plant was gathered matters. Anyone on medication, pregnant, or managing a diagnosed condition should speak to a doctor or a qualified practitioner first.

Side effectsLoose stool and cramping
Skin irritation in some people
ContraindicationsPregnancy, in medicinal quantity.
Intestinal obstruction or undiagnosed abdominal pain.
Inflammatory bowel disease.
InteractionsMedicines for the heart, particularly digoxin — potassium loss from repeated purgation raises the risk.
Diuretic medicines — salt loss adds together.
Any medicine taken by mouth — absorption is reduced.
Pregnancy and breastfeedingNot to be used in medicinal quantity in pregnancy or breastfeeding.
Senna occidentalis grows alongside it and is toxicSenna occidentalis is documented as toxic, causing muscle and liver damage in livestock and poisoning in children. It is a close relative growing in the same places, so material collected without care may contain it.

Growing it

ClimateTropical; comes up with the monsoon on field margins and waste ground.
SoilAlmost any. A legume.
PlantingNot planted. It self-sows everywhere.
HarvestLeaf picked young through the rains. Pods collected when dry and the seed threshed out.
What is not statedThis library has not verified region-specific spacing, variety and yield figures against a named agricultural authority for every growing country, and does not state them rather than guessing.

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What this is not

Sources

GBIF Backbone Taxonomy species-match record for Senna tora (L.) Roxb.
Global Biodiversity Information Facility (GBIF) · read 2026-09-28
Confirming live, rather than from memory, the accepted botanical name and family behind the Sanskrit name.
https://api.gbif.org/v1/species/match?name=Senna%20tora
The Ayurvedic Pharmacopoeia of India — Chakramarda (Senna tora)
Pharmacopoeia Commission for Indian Medicine and Homoeopathy, Ministry of Ayush, Government of India · read 2026-09-28
The official Indian pharmacopoeial standing of the dravya and the identity of the part used as the pharmacopoeial article.
https://pcimh.gov.in/
Compendium of Monographs — Natural Health Products
Health Canada, Natural and Non-prescription Health Products Directorate · read 2026-09-28
A regulator outside India that publishes monographs covering Ayurvedic ingredients — used for the safety framing, and for the line between a permitted traditional-use claim and clinical evidence.
https://www.canada.ca/en/health-canada/services/drugs-health-products/natural-non-prescription/applications-submissions/product-licensing/compendium-monographs.html
Classical matra by dose form
Sharangadhara Samhita, Madhyama Khanda
The classical quantity for each dose form, as the standard reference gives it. Sharangadhara is where Ayurveda's dose forms and their measures are set out, and it is what every Dravyaguna textbook reproduces.
https://niimh.nic.in/ebooks/esharangadhara/
← all dravya