LAISHA · DRAVYAGUNA

Karpasa

कर्पास

Gossypium herbaceum L.

Malvaceae · Gossypium

Benefits & side effects

TRADITIONAL VIEW, WITH SAFETY LIMITS

Hindi name: Kapas

What the texts say Karpasa 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 — absolutely.; Breastfeeding.; Any man who may wish to father children, in light of the gossypol finding.; and more below.

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

Stands in 7 groups

A Samhita can only be read forwards, from the group to its members. This is the same list read backwards.

Photographs

Matra and anupana

AS THE CLASSICAL TEXTS AND THE API PRESCRIBE

Mula twak kwatha20–40 ml
AnupanaUshnodaka
KalaAdhobhakta

The root bark is an emmenagogue and is contraindicated in pregnancy. Gossypol in the seed is an antifertility agent.

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
MadhuraTikta
Guna
GuruSnigdha
ViryaUshna
VipakaKatu
PrabhavaThe texts use karpasa mula twak in obstetric practice and name it for the uterus, which is also the reason for the caution below.
DoshakarmaVatahara. Being guru and snigdha it increases kapha.

Madhura and tikta with ushna virya and katu vipaka.

Karma and part used

VataharaStanyajananaVedanasthapanaGarbhashaya sankochakaShothahara

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 angaMula twak (the root bark)
Beeja (the seed)
Patra (the leaf)
Why it mattersThe root bark is the dravya of the texts. The seed gives an oil, and both carry gossypol, which is the subject of the warning below.

Paryaya

TundikeriSamudrantaBadaraKarpasiPicchila

Karpasa gives the English word canvas, through Greek and Latin — one of the few dravya in this library whose Sanskrit name is still in daily use in another language.

Names, by language

EnglishCotton
SinhalaKapu
NepaliKapas
HindiKapas
KannadaHatti
TamilParuthi
TeluguPatti
MalayalamParutti
MarathiKapus
GujaratiKapas
BengaliKapas
PunjabiKapah
OdiaKapa
UrduKapas

Classical references

Bhavaprakasha Nighantu
Guduchyadi Varga
Gives the rasa, guna, virya and vipaka of karpasa.
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

Karpasa Mula KwathaNamed for the root bark.
Karpasasthyadi TailaNamed for the dravya, used externally.
Dashamoola TailaKarpasa appears in some recensions.

Adulterants and substitutes

Root bark of Gossypium hirsutum is used where the tradition means Gossypium herbaceum, and hirsutum is what grows in Indian fields now. Cottonseed oil is also a common adulterant of other edible oils, including sesame, which is where most people encounter gossypol without knowing it.

Identity

Matched live against the GBIF backbone on 28 September 2026 at 99 per cent confidence. The Old World cotton of Indian tradition; most cotton grown in India today is Gossypium hirsutum, an American species, which matters for the safety note below.

A WAY TO REMEMBER IT

Gossypium is the Latin for cotton. Herbaceum means herbaceous, not woody — this is the old-world short-staple cotton.

What the tradition holds

Karpasa is described in the Bhavaprakasha Nighantu and its root bark is named in the classical literature for the uterus. That is what the tradition holds and where it is written down, not a finding about what the bark does in a body.

Constituents. The plant carries gossypol, a polyphenol concentrated in the seed and root. Gossypol was studied as a male contraceptive and abandoned because the infertility it caused was often permanent.

What the evidence says

StatusTraditional use is extensive and long recorded. Modern clinical evidence is limited.
SuggestedNo claim of established clinical effect is made here. What is documented about gossypol is set out in the safety section, because it is a harm rather than a benefit.
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 gapGossypol content varies between cotton species and between glanded and glandless varieties, and is not knowable without assay.

Safety

Two things, both serious. Gossypol was trialled as a male contraceptive in the twentieth century and development was abandoned because a significant proportion of men did not recover fertility after stopping it — the infertility was often permanent. Gossypol also causes low potassium with muscle weakness and paralysis, documented in populations eating unrefined cottonseed oil. Separately, the root bark is used traditionally to act on the uterus and has been used to procure abortion, so it is absolutely contraindicated in pregnancy. This is not a dravya for self-treatment in any form. Anyone on medication, pregnant, or managing a diagnosed condition should speak to a doctor or a qualified practitioner first.

Side effectsDigestive upset
Weakness
Nausea
ContraindicationsPregnancy — absolutely.
Breastfeeding.
Any man who may wish to father children, in light of the gossypol finding.
Self-treatment of any kind.
InteractionsDiuretic medicines — potassium loss adds together.
Medicines for the heart, particularly digoxin — potassium loss raises the risk.
Pregnancy and breastfeedingNot to be used in pregnancy in any quantity or form. Not to be used while breastfeeding.
Gossypol can cause permanent infertility in menGossypol was developed as a male contraceptive and abandoned because a substantial proportion of men did not recover fertility after stopping it. This is documented and is the single most important fact about this plant.
Gossypol causes dangerous potassium lossLow potassium with muscle weakness and paralysis has been documented in populations consuming unrefined cottonseed oil.
The root bark acts on the uterusKarpasa root bark has been used to procure abortion, which is why pregnancy is an absolute contraindication.

Growing it

ClimateTropical and subtropical with a dry ripening period.
SoilDeep black cotton soil; deep-rooted and fairly drought-hardy.
PlantingSown direct as an annual field crop.
HarvestBolls picked as they open. Root bark is taken when the crop is grubbed out at the end of the season.
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 Gossypium herbaceum L.
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=Gossypium%20herbaceum
The Ayurvedic Pharmacopoeia of India — Karpasa (Gossypium herbaceum L.)
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/
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