LAISHA · DRAVYAGUNA

Kapikacchu

कपिकच्छु

Mucuna pruriens (L.) DC.

Fabaceae · Mucuna

Benefits & side effects

TRADITIONAL VIEW, WITH SAFETY LIMITS

Hindi name: Kaunch

What the texts say Kapikacchu 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 and breastfeeding.; Anyone taking levodopa or other Parkinson's medicine, except under a doctor's direction.; Anyone taking an MAO inhibitor.; and more below.

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
AnupanaDugdha · Ghrita · Sharkara
KalaPragbhakta

The seed is a natural L-DOPA source. The pod hairs are a severe irritant and must be removed — that is the shodhana.

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.

Pharmacopoeial standard

Ayurvedic Pharmacopoeia of India, Part I

MarkerL-DOPA
Assay
Total ash
Acid-insoluble ash
Alcohol-soluble extractive
Water-soluble extractive
Foreign matter

Mucuna pruriens seed. L-DOPA content varies severalfold with variety and is the single most important figure for this dravya.

These are the marker and the identity test for this dravya, and they are not a test Laisha has run on anything. Laisha does not state the numeric limits here: the assay, ash and extractive figures must be read from the current edition of the Ayurvedic Pharmacopoeia of India, because a wrong limit printed here is a number a laboratory would act on. The entries in this library that DO carry figures carry them because each one was checked.

Rasapanchaka

Rasa
MadhuraTikta
Guna
GuruSnigdha
ViryaUshna
VipakaMadhura
PrabhavaThe texts single out kapikacchu as vrishya and as vatahara, and it is the dravya named most often where the nervous system and vata are both involved.
DoshakarmaVatahara. Being guru and snigdha it can increase kapha.

Madhura and tikta with ushna virya and madhura vipaka.

Karma and part used

VrishyaBalyaBrimhanaVataharaRasayana

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)
Mula (the root)
Why it mattersThe seed is the dravya. The hairs on the pod are intensely irritant and are not a medicine — they are the reason the plant has its name and its reputation, and handling the pod without care causes severe itching.

Paryaya

AtmaguptaKanduraSwayamguptaShukashimbiMarkati

Atmagupta and Swayamgupta both mean self-protected: the plant defends itself with the stinging hairs on its pods. Kandura means itching. The paryaya are a warning about handling, which is unusual and useful.

Names, by language

EnglishVelvet bean
SinhalaWanduru me
NepaliKauso
HindiKaunch
KannadaNasugunni
TamilPoonaikali
TeluguDuradagondi
MalayalamNaikurana
MarathiKhaj kuhili
GujaratiKavach
BengaliAlkushi
PunjabiKawanch
OdiaBaidanka
UrduKonch

Classical references

Charaka Samhita
Chikitsasthana, the chapter on vajikarana
Kapikacchu is named among the dravya used to build strength and vigour.
Bhavaprakasha Nighantu
Guduchyadi Varga
Gives the rasa, guna, virya and vipaka of kapikacchu.
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

Vanari GutikaKapikacchu is the principal dravya.
Kapikacchu ChurnaNamed for the dravya.
Ashwagandhadi LehyamAmong the dravya of the formulation.

Adulterants and substitutes

Mucuna utilis and other Mucuna species are grown as fodder and green manure and their seed is substituted; it differs in L-DOPA content, which for this dravya is the whole of its activity. Seed that has been stored badly loses L-DOPA, so old stock is weaker in a way nobody can see.

Identity

Matched live against the GBIF backbone on 28 September 2026 at 99 per cent confidence. The seed of this plant is a natural source of L-DOPA, the same compound used as a prescription medicine for Parkinson's disease, which makes it one of the most pharmacologically active dravya in this library.

A WAY TO REMEMBER IT

Mucuna is from a Brazilian Tupi name. Pruriens means itching — from prurio, to itch, the same root as prurient. The pod hairs earn it. Kapi-kacchu: monkey-itch.

What the tradition holds

Kapikacchu is named in the Charaka Samhita among the vajikarana dravya and is described in the Bhavaprakasha Nighantu. 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 L-DOPA, typically several per cent by weight. L-DOPA is the precursor of dopamine and is a prescription medicine in its own right.

What the evidence says

StatusTraditional use is extensive and long recorded. Modern clinical evidence is limited.
SuggestedA constituent of this seed is a prescription medicine for Parkinson's disease, and studies of the seed in that condition exist. That is not a reason to treat the herb as proven and safe for self-use — it is a reason to treat it as belonging with a doctor, because a plant carrying a drug in variable amount needs supervision more than a plant that does not.
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 gapL-DOPA content varies with variety, season and storage, so the strength of a given batch is not knowable without assay.

Safety

This is a traditional strengthening herb that contains a real drug. L-DOPA raises dopamine, and taking it alongside prescribed Parkinson's medicine can push the dose too high, causing involuntary movements, confusion and dangerous swings in blood pressure. Anyone on levodopa, on an MAO inhibitor, or on medicines for mood must not take this without their doctor knowing. The pod hairs cause severe skin irritation on contact and must never be handled bare-handed. Anyone on medication, pregnant, or managing a diagnosed condition should speak to a doctor or a qualified practitioner first.

Side effectsNausea and vomiting
Bloating
Headache
Insomnia
Involuntary movements at high intake
ContraindicationsPregnancy and breastfeeding.
Anyone taking levodopa or other Parkinson's medicine, except under a doctor's direction.
Anyone taking an MAO inhibitor.
Psychotic illness.
Melanoma, for which levodopa carries a caution.
InteractionsLevodopa and carbidopa — kapikacchu seed IS a natural source of L-DOPA, so this is additive by definition, not by interaction. Dyskinesia and nausea can appear at a levodopa dose that was previously tolerated. The prescribing neurologist must know.
MAO inhibitors — risk of hypertensive crisis with a dopamine precursor.
Antipsychotics, which are dopamine antagonists — the two oppose each other directly.
Antihypertensives and antidiabetics — additive lowering reported.
Pregnancy and breastfeedingNot to be used in pregnancy or breastfeeding.
It contains L-DOPA, a prescription drugThe seed carries L-DOPA, the medicine used for Parkinson's disease, in an amount that varies between batches. Taken with prescribed levodopa the effects add together and can cause involuntary movements, confusion and dangerous blood pressure changes. With an MAO inhibitor the combination can cause a hypertensive crisis.
The pod hairs are severely irritantThe hairs covering the pod cause intense itching and skin inflammation on contact and have been used as an irritant for exactly that reason. The pods are not handled bare-handed.

Growing it

ClimateTropical and subtropical; a vigorous annual climber.
SoilWide range; a legume, so it fixes its own nitrogen. Often grown as green manure.
PlantingGrown from seed and trained on a support.
HarvestPods are collected when ripe and handled with covering, because of the hairs. Seed is separated and dried.
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.

Check this page

Scan to open this page
https://laisha.ai/dravya/kapikacchu
Print it and the code still works. It goes to this page and nowhere else.

What this is not

Sources

GBIF Backbone Taxonomy species-match record for Mucuna pruriens (L.) DC.
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=Mucuna%20pruriens
The Ayurvedic Pharmacopoeia of India — Kapikacchu (Mucuna pruriens)
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/
The Ayurvedic Pharmacopoeia of India, Part I - monograph for this dravya
Pharmacopoeia Commission for Indian Medicine and Homoeopathy, Ministry of Ayush, Government of India · read 2026-09-29
The pharmacopoeial identity of the article and the marker used to establish it.
https://pcimh.gov.in/
← all dravya