Nakuli: Benefits, Uses & Dosage

Sanskrit: नकुली • Botanical: Rauwolfia serpentina Benth.

Last updated:

Ayurvedic Properties

Taste (Rasa)
Bitter (Tikta)
Quality (Guna)
Light (Laghu)
Potency (Virya)
Hot (Ushna)
Post-digestive (Vipaka)
Pungent (Katu)
Also Known As
English: Serpentine Root, Indian Snakeroot
Sanskrit: नकुली, सर्पगन्धा
Hindi: नकुली, सर्पगन्धा

What is Nakuli?

Folklore says the mongoose seeks out this plant after fighting a snake, and that is how Nakuli got its name, from nakula, the mongoose. The Bhavaprakash Nighantu describes its root as a famous anti-venom for snake bites, applied externally and given internally.

Nakuli is generally identified with Indian Snakeroot, also called Serpentine Root or Sarpagandha, botanical name Rauwolfia serpentina Benth. Its roots yield reserpine, an alkaloid used in modern medicine for high blood pressure. That tells you how potent this root is.

The identification is debated: a commentary on the Bhavaprakash Nighantu suggests Rauwolfia, while one Charaka Samhita translation reads nakuli as galangal. Under the Rauwolfia identification, Ayurveda uses it for snake bites, insomnia and anxiety. It is a serious medicinal root, not a gentle bedtime tea.

Benefits of Nakuli

Sleep and Anxiety

The Bhavaprakash Nighantu classes Nakuli as Nidrajanana, sleep-inducing, and it is used in Ayurveda for insomnia and anxiety. Its heating potency works against the cold quality of Vata, so it fits racing-mind, Vata-type sleeplessness better than the hot, Pitta type.

Snake Bite and Poisoning

Its oldest role is as an antidote (Vishaghna). The Sushruta Samhita, Kalpa Sthana 8, describes a compound of Arka roots, turmeric (Rajani), Nakuli and Prishniparni used as snuff, drink, enema and ointment in cases of poisoning from bites. The Charaka Samhita, Chikitsa Sthana 23, also lists nakuli among herbs in poison treatment.

Fever and Worms

The Bhavaprakash Nighantu lists it as fever-relieving (Jwarahara) and anthelmintic (Krimighna), which links it to worm infestations.

Uterine Action

It is also described as an emmenagogue (Artavajanana) and a uterine contractor (Garbhashaya Sankochaka). This is a reason for caution as much as a use.

How to Use Nakuli

The root is the part used. Because it yields reserpine, a compound potent enough to be used as a prescription drug for hypertension, this page deliberately gives no home dose.

FormDoseBest ForWhen to Take
Root powder or tablets (sold as Sarpagandha)Practitioner-set onlyVata-type insomnia, anxietyAs prescribed
Classical compounds (snuff, drink, ointment)Practitioner-preparedPoisoning from bitesEmergency medical care comes first

If you are looking for sleep support and have not tried the classical first-line herbs, start with gentler options such as Jatamansi or Brahmi. Nakuli is a root to discuss with a practitioner when those are not enough.

Safety & Side Effects

Nakuli is one of the more potent roots in Ayurveda, and it should be treated with respect.

  • Pregnancy: do not use it. The Bhavaprakash Nighantu lists it as an emmenagogue and a uterine contractor, so avoid it if you are pregnant or trying to conceive.
  • Blood pressure medication: its root yields reserpine, used in modern medicine to lower blood pressure. Talk to your doctor before combining it with any blood pressure drug.
  • Heat: it is heating, so it is a poor match for hot, Pitta-type sleeplessness with night sweats or burning.
  • Snake bite is an emergency. Classical texts describe its anti-venom use, but a snake bite needs immediate emergency medical care.

Use Nakuli only with a practitioner setting the form, dose and duration.

Nakuli vs Other Herbs & Supplements

ComparisonNakuliAlternativeVerdict
Nakuli vs JatamansiStrong, heating, practitioner-guidedJatamansi, one of Ayurveda's most sleep-specific herbsJatamansi is the practical starting point for most people.
Nakuli vs BrahmiSleep-inducing rootBrahmi, a classical sleep-promoting herb taken at homeTry Brahmi first; Nakuli when gentler herbs are not enough.
Nakuli vs SarpagandhaClassical name, identity debatedSarpagandha, Rauwolfia serpentinaMost likely the same plant under the commentary's identification.

Nakuli for Specific Populations

Pregnancy & Nursing

Do not use Nakuli in pregnancy or when trying to conceive: it is classed as an emmenagogue and a uterine contractor. Our sources give no data on nursing, so avoid it unless your doctor approves.

Children

Our sources give no child doses for this potent root. Do not give it to children.

Elderly

Older adults are more likely to be on blood pressure medication, which makes medical supervision essential given its reserpine content.

Athletes

Our sources describe no athletic use.

Frequently Asked Questions

Is Nakuli the same as Sarpagandha?

Most likely. A commentary on the Bhavaprakash Nighantu identifies Nakuli with Rauwolfia serpentina, and its Sanskrit synonyms include Sarpagandha. One Charaka Samhita translation reads nakuli as galangal, so the identification is not unanimous.

Why is it called Nakuli?

It is named after the mongoose (nakula), which is believed to use this plant after snake bites.

What are its classical properties?

It is bitter in taste, light in quality, heating in potency, with a pungent post-digestive effect.

Does Nakuli help with skin problems?

Our knowledge graph links it to skin disorders, but our sources give no specific skin preparation, so we cannot recommend one.

How to Use Nakuli by Condition

Explore how Nakuli is used for specific health concerns — with dosage, preparation methods, and classical references for each.

▶ Classical Text References (2 sources)

References in Charaka Samhita

Sprikka (Delphinium zalil), plava (Cyperus rotundus), sthauneyaka (Taxus baccata), kanksi (Saurashtrika), shaileya (Parmelia perlata), rochana (bile of cow), tagara (Valeriana wallichii), dhyamaka (Cymbopogon martini), kunkuma (Crocus sativua), mamsi (Nardostachys jatamansi), agra (inflorescence) of surasa (Ocimum sanctum), ela (Elettaria cardamomum), ala (Haritala – Purified Arsenic trisulphide), kushtaghna (Khadira – Acacia catechu)), brhati (Solanum indicum), flower of sirisha (Albizzia lebbe

— Charaka Samhita, Chikitsa Sthana — Therapeutic Principles, Chapter 23: Poison Treatment (Visha Chikitsa / विषचिकित्सा)

Vacha (Acorus Calamus), vamsha bark (Bambusa arundinacea), patha (Cissambelos Pereira), nata (Valeneria wallichii), flower stalk of tulasi (Ocimum sanctum), bala (Sida cordifolia), atibala (Abutilon indicum), nakuli (Alpinia galangal), kushtha (Saussurea lappa), shirisha (Albizzia lebbeck), haridra (Curcuma longa), daruharidra (Berberis aristata), guha (krishnaparni - Uraria picta), atiguha (shalaparni - Desmodium gangeticum), shveta (Clitoria ternacia), ajagandha (Carum roxburghianum), shilajat

— Charaka Samhita, Chikitsa Sthana — Therapeutic Principles, Chapter 23: Poison Treatment (Visha Chikitsa / विषचिकित्सा)

Source: Charaka Samhita, Chikitsa Sthana — Therapeutic Principles, Chapter 23: Poison Treatment (Visha Chikitsa / विषचिकित्सा)

References in Sushruta Samhita

Haridra, Sthauneya, Laksha, the five kinds of officinal salts, Kumuda, Utpala, Padma, flower of Arka, flowers and fruits of Champaka, As'oka, Sumanas, Tilaka (sesamum), Patali, Salmali, S'elu, Sirisha, Surasi, flowers of Dhava, Asva-karna, and of Sindhuvdra, flowers of Guggula, Kumkuma, Vimbi, Sarpa-kshi and Gandha-Nakuli should be carefully collected and pasted with honey, clarified butter and the bile of a cow and should be kept inside a horn (or a receptacle made of that material).

— Sushruta Samhita, Kalpa Sthana, Chapter 7: Dundhubhi-Svaniya

In such cases, a compound consisting of Arka roots, Rajani, Nakuli and Prisni-parnika should be employed as snuff as well as in drink (Pana), enemas (Vastis) and ointments etc.

— Sushruta Samhita, Kalpa Sthana, Chapter 8: Kita-Kalpa

Haridra, Sthauneya, Laksha, the five kinds of officinal salts, Kumuda, Utpala, Padma, flower of Arka, flowers and fruits of Champaka, As'oka, Sumanas, Tilaka (sesamum), Patali, Salmali, S'elu, Sirisha, Surasi, flowers of Dhava, Asva-karna, and of Sindhuvdra, flowers of Guggula, Kumkuma, Vimbi, Sarpa-kshi and Gandha-Nakuli should be carefully collected and pasted with honey, clarified butter and the bile of a cow and should be kept inside a horn (or a receptacle made of that material).

— Sushruta Samhita, Dundhubhi-Svaniya

In such cases, a compound consisting of Arka roots, Rajani, Nakuli and Prisni-parnika should be employed as snuff as well as in drink (Pana), enemas (Vastis) and ointments etc.

— Sushruta Samhita, Kita-Kalpa

Source: Sushruta Samhita, Kalpa Sthana, Chapter 7: Dundhubhi-Svaniya; Kalpa Sthana, Chapter 8: Kita-Kalpa; Dundhubhi-Svaniya; Kita-Kalpa

Medical Disclaimer: The information on this page is for educational purposes only and is not intended as medical advice. Ayurvedic treatments should be pursued under the guidance of a qualified practitioner (BAMS/MD Ayurveda). Always consult your healthcare provider before starting any new treatment. Content is sourced from classical Ayurvedic texts and may not reflect the latest medical research.