LAISHA · DRAVYAGUNA

Ashwagandha

अश्वगन्धा

Withania somnifera (L.) Dunal

Solanaceae · Withania

One name, more than one plant

Matched to the accepted name in the GBIF backbone at 99% confidence. Solanaceae is the nightshade family, which matters: several relatives are toxic, and a plant collected in the wild by somebody who is not certain is the commonest route to harm in herbal medicine.

Benefits & side effects

TRADITIONAL VIEW, WITH SAFETY LIMITS

Hindi name: Asgandh

What the texts say Ashwagandha does

What the evidence says. Limited and mixed.

Side effects and limits

Avoid or ask first: Autoimmune conditions — not recommended.; Thyroid disorders — not recommended.; Before surgery — not recommended.

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

Stands in 3 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

Churna3–6 g
AnupanaDugdha · Ghrita · Ushnodaka
KalaRatri or pragbhakta

Classically given with dugdha as balya and rasayana. API assay: total withanolides not less than 0.2 per cent.

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

MarkerTotal withanolides
AssayNot less than 0.2 per cent
Total ashTotal ash not more than 7 per cent
Acid-insoluble ashNot more than 1 per cent
Alcohol-soluble extractiveAlcohol-soluble extractive not less than 15 per cent
Water-soluble extractiveWater-soluble extractive not less than 20 per cent
Foreign matterForeign matter not more than 2 per cent

Root only. Leaf and stem raise the ash and lower the withanolides, and leaf-adulterated material is common.

These are the pharmacopoeial limits for the article, not a test Laisha has run on anything. They are here so a practitioner can ask a supplier for a certificate of analysis and know what the numbers on it should say.

Rasapanchaka

Rasa
TiktaKatuMadhura
Guna
LaghuSnigdha
ViryaUshna
VipakaMadhura
PrabhavaClassified as rasayana and as balya. Charaka places it among the balya dravya, and the texts treat its action as prabhava rather than derivable from the rasapanchaka alone.
DoshakarmaVatakaphahara. Being ushna and snigdha it can increase pitta, which the texts note.

Tikta and katu with madhura. Madhura vipaka with ushna virya is the combination the texts credit for its balya action.

Karma and part used

BalyaRasayanaVrishyaVataharaNidrajanana

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 (the root)
Why it mattersTraditional use is of the root. The leaf and berry are not the same material and are not interchangeable with it.

Paryaya

BaladaVajiniVarahakarniHayagandhaGandhapatri

Ashwa means horse and gandha means smell: the fresh root smells of it, and that is the feature the name records. Vajini and Hayagandha say the same thing in other words.

Names, by language

EnglishIndian winter cherry
NepaliAshwagandha
HindiAsgandh
KannadaAmangura
TamilAmukkara
TeluguPennerugadda
MalayalamAmukkuram
MarathiAskandha
GujaratiAsundh
BengaliAshwagandha
PunjabiAsgand
OdiaAswagandha
UrduAsgand

Classical references

Charaka Samhita
Sutrasthana, chapter 4 (Shadvirechanashatashritiya)
Places ashwagandha among the balya dravya, the group named for strength.
Bhavaprakasha Nighantu
Guduchyadi Varga
Gives the rasa, guna, virya and vipaka of ashwagandha.
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

AshwagandharishtaA fermented preparation named for the dravya.
Ashwagandha ChurnaThe plain powdered root.
BalarishtaAshwagandha is among the principal dravya.

Adulterants and substitutes

Withania coagulans, a different species, is sold under overlapping names, and roots of unrelated plants appear in loose powder. Because the root is usually sold cut or powdered, the horse smell that gives the plant its name — the one feature a buyer could check — is often the only test left, and it fades with age.

Identity

Matched to the accepted name in the GBIF backbone at 99% confidence. Solanaceae is the nightshade family, which matters: several relatives are toxic, and a plant collected in the wild by somebody who is not certain is the commonest route to harm in herbal medicine.

A WAY TO REMEMBER IT

Withania honours Henry Witham. Somnifera is somnus (sleep) + fero (I bring) — sleep-bringing. The Sanskrit says the root smells of a horse; the Latin says what it was thought to do.

What the tradition holds

Ashwagandha has been used in Ayurvedic medicine for thousands of years, where it is classed among the rasayana preparations. Ayurveda describes it as supporting resilience under strain. That is what the tradition holds; it is a description of a historical practice, not a finding about what the plant does in a body.

Constituents. Contains several bioactive compounds, including a group of substances known as withanolides.

What the evidence says

StatusLimited and mixed.
SuggestedResearch indicates some ashwagandha preparations may help with insomnia and stress. Evidence on anxiety remains unclear. Limited research suggests two to four months of use may affect testosterone and sperm quality.
Not establishedThere is not enough evidence to determine whether ashwagandha is helpful for any other health condition. Long-term safety data is insufficient; what safety evidence exists covers roughly three months of use.
The honest gapMost published studies use a standardised commercial extract. A root powder bought loose is not the same material, so even the limited findings that exist may not carry across to it.

Safety

Documented liver injury, a clear warning against use in pregnancy, and interactions with several common classes of medicine. This is not a plant to start without speaking to a doctor or pharmacist, particularly for anyone already on medication.

Side effectsDrowsiness
Stomach upset
Diarrhoea
Vomiting
ContraindicationsAutoimmune conditions — not recommended.
Thyroid disorders — not recommended.
Before surgery — not recommended.
InteractionsThyroid hormone — ashwagandha raises T4 and T3 in reported cases, and thyrotoxicosis has been described in a patient on levothyroxine. Check thyroid function rather than assuming.
Immunosuppressants — the immunomodulatory direction opposes them.
Sedatives, benzodiazepines and alcohol — additive sedation.
Antidiabetic and antihypertensive medicines — additive lowering.
Liver injury has been reported to LiverTox with ashwagandha supplements, usually within 2–12 weeks and usually cholestatic. It is uncommon and it is real.
Pregnancy and breastfeedingShould be avoided during pregnancy, and should not be used while breastfeeding.
Liver injuryA number of cases link liver injury to ashwagandha supplements. It is rare, but it is documented rather than theoretical, and it is the reason this entry leads with safety.

Growing it

ClimateA shrub of dry subtropical regions, native to India, Africa and the Middle East.
SoilRequires free-draining soil; it does not tolerate standing water.
PlantingGrown from authenticated seed. Authenticated matters more here than anywhere else in this library, because the medicinal material is the root and a root cannot be identified by eye once it is out of the ground.
HarvestRoots are lifted at maturity, washed, and dried under conditions that are recorded, so a batch can be traced afterwards.
What is not statedLaisha does not hold a sourced per-hectare yield or cost figure for ashwagandha. None is stated here rather than an estimate being offered.

Grown as a crop: how to grow ashwagandha, from sowing to harvest, in Laisha's grow guides.

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https://laisha.ai/dravya/ashwagandha
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What this is not

Sources

Ashwagandha: Usefulness and Safety
National Center for Complementary and Integrative Health (NCCIH), National Institutes of Health · read 2026-09-20
Botanical description, withanolide constituents, the state of the evidence for insomnia, stress, anxiety and testosterone, the side-effect list, the liver-injury signal, the pregnancy and breastfeeding warning, the interaction classes, and the autoimmune, thyroid and pre-surgery contraindications.
https://www.nccih.nih.gov/health/ashwagandha
LiverTox: Clinical and Research Information on Drug-Induced Liver Injury — Ashwagandha
LiverTox, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health · read 2026-09-20
The standing reference for reported hepatotoxicity associated with ashwagandha, cited alongside NCCIH so the liver-injury statement rests on the body that catalogues such cases.
https://www.ncbi.nlm.nih.gov/books/NBK548536/
Withania somnifera (L.) Dunal — GBIF Backbone Taxonomy
Global Biodiversity Information Facility (GBIF), Copenhagen · read 2026-09-20
The accepted botanical name, its author, and the family and genus placement, matched at 99% confidence.
https://api.gbif.org/v1/species/match?name=Withania%20somnifera
HMPC meeting minutes, 18–20 March 2024 — risk assessment of herbal preparations containing Withania somnifera (Ashwagandha)
European Medicines Agency (EMA), Committee on Herbal Medicinal Products · read 2026-09-20
That the European regulator has taken up a risk assessment of ashwagandha preparations, recorded so this entry does not rest on a single country. Laisha states that the assessment exists and does not summarise conclusions it has not read in full.
https://www.ema.europa.eu/en/documents/minutes/minutes-hmpc-meeting-18-20-march-2024_en.pdf
The Ayurvedic Pharmacopoeia of India — Ashwagandha (Withania somnifera)
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/
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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