LAISHA · DRAVYAGUNA

Shigru

शिग्रु

Moringa oleifera Lam.

Moringaceae · Moringa

Benefits & side effects

TRADITIONAL VIEW, WITH SAFETY LIMITS

Hindi name: Sahjan

What the texts say Shigru 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, as regards the root bark and seed absolutely.; Breastfeeding, as regards the root bark.

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

Stands in 4 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

Twak churna2–4 g
Beeja churna1–3 g
Kwatha50–100 ml
AnupanaUshnodaka · Madhu
KalaAdhobhakta

Root bark and seed are different drugs with different matra; the root bark of true Moringa is not the same as the commonly substituted Moringa concanensis.

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

MarkerGlucosinolates and the isothiocyanates
Assay
Total ash
Acid-insoluble ash
Alcohol-soluble extractive
Water-soluble extractive
Foreign matter

Moringa oleifera. Root bark and seed differ substantially and are not interchangeable.

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
KatuTikta
Guna
LaghuRukshaTikshna
ViryaUshna
VipakaKatu
PrabhavaThe texts single out shigru as shothahara and as acting where there is accumulation, and name it particularly for granthi and gulma.
DoshakarmaKaphavatahara. Being ushna and tikshna it increases pitta.

Katu and tikta with ushna virya and katu vipaka.

Karma and part used

ShothaharaDeepanaLekhanaKrimighnaVranashodhanaVidradhihara

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)
Phala (the pod)
Why it mattersThe texts use the root bark and seed as dravya. The pod and leaf are food. That distinction matters: the root bark is the strong article and the one the safety section is about, while the pod on a plate is not the same thing at all.

Paryaya

ShobhanjanaTikshnagandhaAkshivaMochakaHaritashaka

Tikshnagandha names the sharp smell of the root, which is like horseradish and is where the English name horseradish tree comes from. Shobhanjana is the paryaya the texts use most.

Names, by language

EnglishDrumstick tree
SinhalaMurunga
NepaliSitalchini
HindiSahjan
KannadaNugge
TamilMurungai
TeluguMunaga
MalayalamMuringa
MarathiShevga
GujaratiSaragvo
BengaliSajina
PunjabiSohanjna
OdiaSajana
UrduSahajan

Classical references

Bhavaprakasha Nighantu
Shaka Varga
Gives the rasa, guna, virya and vipaka of shigru and places it among the vegetables.
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

Shigru GhritaNamed for the dravya.
Shigrvadi KwathaNamed for the dravya.
Rasnadi KwathaShigru appears in some recensions.

Adulterants and substitutes

Moringa concanensis and other Moringa species are collected as shigru. The substitution that matters is the same one as with bilva and gambhari: stem bark sold as root bark, because stem bark can be had without killing the tree. Given that the root bark carries the alkaloids described below and the stem bark carries them differently, this is not a harmless swap in either direction.

Identity

Matched live against the GBIF backbone on 28 September 2026 at 99 per cent confidence. A dravya, a vegetable and a field crop at once, and among the very few plants in this library that a household may be growing already.

A WAY TO REMEMBER IT

Moringa is from the Tamil-Malayalam murungai. Oleifera means oil-bearing: oleum + fero. The seed gives ben oil, and the Latin records it.

What the tradition holds

Shigru is described in the Bhavaprakasha Nighantu among the vegetables and is recorded as shothahara. 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 root bark carries alkaloids including spirochin and moringine, along with glucosinolates that give it its sharp smell. The leaf is nutritionally dense and is a quite different article.

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 gapAlmost all recent published work concerns the leaf as a food, and very little concerns the root bark the classical texts actually use. The two should not be read as one.

Safety

This entry has to make one distinction very clearly. The pod and leaf are eaten as food across India and are not the concern. The root bark is a different matter: it carries alkaloids, it is documented as having been used to procure abortion, and it is contraindicated in pregnancy. Reports of poisoning from root bark exist. Someone reading about moringa as a nutritious leaf and then taking root bark on that basis has not taken more of the same thing — they have taken something else. Anyone on medication, pregnant, or managing a diagnosed condition should speak to a doctor or a qualified practitioner first.

Side effectsDigestive upset
Burning sensation
Loose stool from the leaf in quantity
ContraindicationsPregnancy, as regards the root bark and seed absolutely.
Breastfeeding, as regards the root bark.
InteractionsAntidiabetic medicines — Moringa leaf has a documented hypoglycaemic effect.
Antihypertensives — additive lowering reported.
Thyroid hormone — Moringa affects thyroid status in animal work.
The ROOT BARK contains spirochin and is an abortifacient; it is not the leaf and is contraindicated in pregnancy.
Pregnancy and breastfeedingThe root bark and seed are not to be used in pregnancy in any quantity. The pod and leaf as ordinary food are long established, and medicinal quantities should still be discussed with a qualified practitioner.
The root bark is not the vegetableMoringa root bark carries alkaloids and has been used to procure abortion; poisoning from it is recorded. The pod and leaf eaten as food do not carry this risk. Conflating the two is the specific error this note exists to prevent.

Growing it

ClimateTropical and subtropical, drought-hardy, fast-growing.
SoilWide range including poor, sandy and dry ground. It fails in waterlogging.
PlantingGrown readily from seed or from large cuttings. Bears within a year, which is unusual for a tree.
HarvestPods and leaves are picked through the season. Root bark is taken only when a tree is grubbed out, which is the honest source.
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 moringa, from sowing to harvest, in Laisha's grow guides.

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What this is not

Sources

GBIF Backbone Taxonomy species-match record for Moringa oleifera Lam.
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=Moringa%20oleifera%20Lam.
The Ayurvedic Pharmacopoeia of India — Shigru (Moringa oleifera Lam.)
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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