LAISHA · DRAVYAGUNA

Bilva

बिल्व

Aegle marmelos (L.) Corrêa

Rutaceae · Aegle

Benefits & side effects

TRADITIONAL VIEW, WITH SAFETY LIMITS

Hindi name: Bel

What the texts say Bilva 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: No absolute contraindication is documented here. This is written deliberately rather than left blank.

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

Unripe fruit churna3–6 g
Kwatha50–100 ml
AnupanaTakra · Ushnodaka · Guda
KalaAdhobhakta

The UNRIPE fruit is grahi and the ripe fruit is the opposite — a classical trap and a real clinical error.

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

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

Aegle marmelos fruit. The unripe fruit is the article for grahi use and the ripe fruit is not the same material.

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
KashayaTikta
Guna
LaghuRuksha
ViryaUshna
VipakaKatu
PrabhavaThe texts single out the unripe fruit as grahi and treat that as prabhava. It is the property the dravya is best known for.
DoshakarmaKaphavatahara. The ripe fruit is described as tridoshakara and the texts warn against it, which is unusual and worth remembering.

Kashaya and tikta with ushna virya and katu vipaka. The ripe fruit is madhura and is treated separately.

Karma and part used

GrahiDeepanaPachanaVataharaBalya

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)
Phala (the fruit), unripe and ripe treated separately
Patra (the leaf)
Why it mattersThe root bark is what Dashamoola calls for. The unripe and the ripe fruit are treated as two different dravya with opposite actions — the unripe is grahi and the ripe is not — and confusing them is the single commonest error with this plant.

Paryaya

ShriphalaShandilyaShailushaMalooraSadaphala

Shriphala, the fruit of Shri, records that the tree is sacred to Shiva and that its trifoliate leaf is offered in worship. That is why bilva trees stand near temples and why the leaf is easy to find.

Names, by language

EnglishBael
SinhalaBeli
NepaliBel
HindiBel
KannadaBilvapatre
TamilVilvam
TeluguMaredu
MalayalamKoovalam
MarathiBel
GujaratiBili
BengaliBel
PunjabiBil
OdiaBela
UrduBel

Classical references

Sushruta Samhita
Sutrasthana, chapter 38 (Dravyasangrahaniya)
Counted among the Brihat Panchamoola, the five great roots of Dashamoola.
Charaka Samhita
Sutrasthana, chapter 4 (Shadvirechanashatashritiya)
Named among the dravya of the chapter.
Bhavaprakasha Nighantu
Amradi Phala Varga
Gives the rasa, guna, virya and vipaka of bilva and distinguishes the unripe from the ripe fruit.

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

DashamoolarishtaOne of the ten roots.
Dashamoola KwathaOne of the ten roots.
Bilvadi ChurnaNamed for the dravya.
Bilwadi GutikaBilva is the principal dravya.

Adulterants and substitutes

The substitution that matters is not between species but between parts. Ripe fruit sold or used where unripe is meant reverses the action the formulation was built on, and once dried and powdered the two look similar. Limonia acidissima, also called wood apple in English, is a different genus and is sometimes sold under the same English name.

Identity

Matched live against the GBIF backbone on 28 September 2026 at 99 per cent confidence. The genus holds this one species. One of the ten roots of Dashamoola, counted among the five great roots.

A WAY TO REMEMBER IT

Aegle is the Greek nymph Aigle, one of the Hesperides who guarded golden fruit — and this fruit is golden and hard-shelled. Marmelos is from the Portuguese marmelo, quince.

What the tradition holds

Bilva is counted among the Brihat Panchamoola in the Sushruta Samhita and the unripe fruit is recorded as grahi throughout the classical literature. That is what the tradition holds and where it is written down, not a finding about what the plant does in a body.

Constituents. The fruit and bark carry coumarins including marmelosin, along with alkaloids and tannins. The unripe fruit is markedly higher in tannin, which is the chemical counterpart of the distinction the texts draw.

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 often does not state whether unripe or ripe fruit was used, which given the above makes much of it difficult to read.

Safety

The ripe fruit is eaten widely as food and is made into a drink in summer. The texts themselves warn that the ripe fruit is tridoshakara and hard to digest, which is a caution from within the tradition rather than from outside it. The unripe fruit is grahi and can cause constipation. Anyone on medication, pregnant, or managing a diagnosed condition should speak to a doctor or a qualified practitioner first.

Side effectsConstipation from the unripe fruit
Digestive heaviness from the ripe fruit
ContraindicationsNo absolute contraindication is documented here. This is written deliberately rather than left blank.
InteractionsNo specific drug interaction is documented for this dravya. That is the honest state of the evidence, not a statement that none exists — most Ayurvedic dravya have never been studied for interaction. Tell the prescribing doctor it is being taken.
Antidiabetic medicines — hypoglycaemic effect reported for the unripe fruit.
Pregnancy and breastfeedingThere is not enough evidence to establish safety in pregnancy or breastfeeding, and a qualified practitioner should be asked first.

Growing it

ClimateTropical and subtropical, tolerant of drought.
SoilWide range, including poor and alkaline ground where little else fruits.
PlantingA tree, raised from seed or by grafting. Several years to bearing.
HarvestFruit picked unripe or left to ripen according to which dravya is wanted. Root bark is taken from part of the root system so the tree survives.
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.

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

Check this page

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

Sources

GBIF Backbone Taxonomy species-match record for Aegle marmelos (L.) Corrêa
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=Aegle%20marmelos
The Ayurvedic Pharmacopoeia of India — Bilva (Aegle marmelos)
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/
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