Ayurvedic Properties
- Taste (Rasa)
- Bitter (Tikta), Astringent (Kashaya)
- Quality (Guna)
- Light (Laghu), Dry (Ruksha)
- Potency (Virya)
- Cold (Sheeta)
- Post-digestive (Vipaka)
- Pungent (Katu)
- Key Constituents
- Salicin (4-10%), Tannins
- Also Known As
- English: Willow, Sallow
Sanskrit: वेतस, शीतवल्क, नदीज, अम्बुवेतस
Hindi: वेदमुश्क, बेदमुश्क
What is Willow?
Long before aspirin came in a bottle, Ayurvedic physicians were boiling the bark of a riverside tree for fever and heat. That tree is Willow, known in Sanskrit as Vetasa, and its bark contains salicin (4 to 10 percent), the natural precursor to aspirin.
The main species is Salix caprea, the Sallow, though the name Vetasa covers several willows, including the Indian Willow (Salix tetrasperma) and Salix acmophylla. One of its Sanskrit names is Nadija, "river-born," because it grows along riverbanks and near water. Another, Shitavalka, means "cool bark."
In the Bhavaprakash Nighantu (Varga 3), Willow is a cold, bitter, astringent bark for Pitta disorders, bleeding conditions and fevers. One caution on names: a reed, Calamus tenuis, is also sometimes called Vetasa, but it is a different plant.
Benefits of Willow
Willow is bitter and astringent in taste (Tikta, Kashaya Rasa), light and dry (Laghu, Ruksha), cold in potency (Sheeta Virya) and pungent after digestion (Katu Vipaka). Its cold, bitter nature makes it a Pitta herb first and foremost.
Fever
The Bhavaprakash Nighantu lists it as antipyretic (Jvaraghna), and Bhavamishra describes the bark decoction as a febrifuge. Its cold potency directly counters the heat of fever.
Bleeding disorders
It alleviates bleeding disorders (Raktapittahara) and is astringent, checking discharges (Stambhana). Ayurveda sees much bleeding as Pitta heat pushing the blood out of its channels, and an astringent, cooling bark tightens and cools at once.
Burning sensations
Willow is also listed as relieving burning (Dahahara), a classic sign of aggravated Pitta.
Eyes
The Sushruta Samhita (Uttara Tantra, Chapter 10) includes Vetasa in a preparation for Pitta-type eye inflammation, and Willow is linked to conjunctivitis, the red, weeping eye.
Thirst, fainting and swelling
The Charaka Samhita (Chikitsa Sthana, Chapter 22) uses country willow, with other cooling herbs mixed in ghee, applied over the heart region and face for fainting, giddiness and thirst. Chapter 12 uses it in a medicated oil for edema.
Skin
The Sharangadhara Samhita (Uttara Khanda, Chapter 11) includes Vetasa in a topical paste for leucoderma, alongside Vakuchi, lac, Pippali and black sesame. Leucoderma is the classical term for white patches, related to vitiligo.
How to Use Willow
The bark is the part used. The Bhavaprakash Nighantu gives two forms with classical doses.
| Form | Dose | Best For | When to Take |
|---|---|---|---|
| Bark decoction | 1 to 2 tola (a classical measure, roughly 12 to 24 g) | Fever, bleeding, burning, Pitta heat | Not specified in our sources |
| Bark powder | 5 to 10 ratti (a classical measure, roughly 0.6 to 1.2 g) | Ongoing Pitta and bleeding complaints | Not specified in our sources |
| External oil or paste | As part of a compound | Swelling, skin patches | Applied topically |
External use
Classically, Willow appears in compound oils, pastes and washes more often than alone: a medicated oil for swelling, a skin paste for leucoderma, and in the Sushruta Samhita (Uttara Tantra, Chapter 30), a decoction with mango and wood apple used to sprinkle over a sick child.
Matching your constitution
Because it is cold, light and dry, Willow suits hot Pitta conditions. It is less suited to cold, dry Vata states.
Safety & Side Effects
Our sources record no formal contraindications for Willow, but its chemistry and qualities point to sensible cautions.
- Salicin: the bark contains salicin, the precursor to aspirin. If you are allergic or sensitive to aspirin, or take blood-thinning medication, ask your doctor before using it.
- Dryness: its light, dry, cold qualities can aggravate Vata if overused.
- Bleeding: heavy or unexplained bleeding needs a medical diagnosis first. Willow is a supporting herb, not a substitute for care.
- Identity: make sure you have Salix bark, not the reed Calamus tenuis, which shares the name Vetasa.
Recommended: Start Here
The simplest way to use Willow is the classical one: a bark decoction for heat.
How: simmer dried willow bark in water and strain. The Bhavaprakash Nighantu gives 1 to 2 tola of decoction; a practitioner can translate that into a daily amount for you.
Who it suits: Pitta patterns, meaning fever, burning sensations, bleeding tendencies and red, inflamed eyes. It is not the herb for cold, dry Vata states.
Find Willow Bark on Amazon ↗ Willow Bark Powder ↗ Willow Bark Capsules ↗
Because the bark contains salicin, check with your doctor first if you are sensitive to aspirin or take blood thinners.
Willow vs Other Herbs & Supplements
| Comparison | Willow | Alternative | Verdict |
|---|---|---|---|
| Willow bark vs aspirin | Whole bark with salicin (4 to 10 percent) and tannins | A single refined compound derived from salicin | Willow is the traditional, whole-plant route; aspirin is the standardised drug. Do not combine them without a doctor. |
| Willow vs Lodhra | Cold, astringent bark for fever and bleeding | Paired with Vetasa in Sushruta's formula for Pitta-type eye inflammation | Willow when fever or heat leads; the two are classical partners rather than rivals |
| Willow vs Sandalwood | Cooling bark taken internally as a decoction | Combined with Vetasa in Charaka's medicated oil for swelling | Both cool Pitta; Willow is the one with a classical internal fever use |
Willow for Specific Populations
Pregnancy & Nursing
Our sources give no safety data for pregnancy or nursing. Because the bark contains salicin, avoid internal use unless your doctor approves.
Children
The Sushruta Samhita (Uttara Tantra, Chapter 30) uses a Willow decoction, with mango and wood apple, as an external sprinkle for a sick child. That is external use only. Do not give Willow internally to children without a doctor, given its salicin content.
Elderly
Older people often run drier and more Vata-prone, and Willow is light and dry. Keep to short courses and check medications, especially blood thinners.
Athletes
Our sources say nothing about athletic use. Its classical role is cooling fever, heat and bleeding.
Frequently Asked Questions
Is willow bark really where aspirin comes from?
Willow bark contains salicin, 4 to 10 percent, which is the natural precursor to aspirin. Ayurveda used the whole bark as a fever remedy long before that link was known.
What does the Sanskrit name Vetasa mean?
Vetasa is the classical name for several willow species. Its synonyms include Nadija, "river-born," and Shitavalka, "cool bark," describing where it grows and how it acts.
Which dosha does Willow balance?
Pitta. It is cold, bitter and astringent, so it cools heat, fever, burning and bleeding. Its dry, light quality makes it less suited to Vata.
Can Willow help red, irritated eyes?
The Sushruta Samhita includes Vetasa in a preparation for Pitta-type eye inflammation, and it is linked to conjunctivitis. Any eye infection should be checked by a doctor first.
How to Use Willow by Condition
Explore how Willow is used for specific health concerns — with dosage, preparation methods, and classical references for each.
▶ Classical Text References (4 sources)
References in Astanga Hridaya Sutrasthan
1-4 Names of Shastras Mandalagra, Vriddhiptra, Uttpala Patra, Adhyardha Dhara, Sarpa Mukha, Eshani, Vetasa Patra, Sarari Mukha, Trikurchaka, Kushapatra, Atavadana Atimukhi, Antrarvaktra, Ardha chandraka, Vrihimukha, Kuthari, Shalaka, Anguli Shastra, Badisa, Karapatra, Kartari, Nakha Shastra, Danta lekhanaka, Suchi, Koorcha, Khaja, the four kinds of Ara, and Karna vedhanaka- are the names of the twenty six sharp instruments.
— Astanga Hridaya Sutrasthan, Shastra Vidhi
Source: Astanga Hridaya Sutrasthan, Shastra Vidhi
References in Charaka Samhita
The application of jambu (Syzgium cumini), Indian hog plum jujube, country willow, barks of five herbs (panchavalkal) and the herbs of panchamla group mixed with ghee over pericardial region, face are curative of fainting, giddiness and thirst.
— Charaka Samhita, Chikitsa Sthana — Therapeutic Principles, Chapter 22: Thirst Disorders Treatment (Trishna Chikitsa / तृष्णाचिकित्सा)
In the water prepared with sprouts of banyan, citrus medica, country willow, roots of sacrificial and thatch grass and liquorice and quench black earthen or black sand or pieces of new earthen vessel which have been heated up to red hot.
— Charaka Samhita, Chikitsa Sthana — Therapeutic Principles, Chapter 22: Thirst Disorders Treatment (Trishna Chikitsa / तृष्णाचिकित्सा)
), ikshuvalika (Asteracanthalongifolia Nees), vetasa (Salixcaprea Linn.
— Charaka Samhita, Sharira Sthana — Human Body & Embryology, Chapter 8: Guidelines for Lineage (Jatisutriya Sharira / जातिसूत्रीय शरीर)
), parivyadha (type of Vetasa, Salix species) bhutika (Trachyspermumammi Sprague), ananta (Hemidesmus indicusR.
— Charaka Samhita, Sharira Sthana — Human Body & Embryology, Chapter 8: Guidelines for Lineage (Jatisutriya Sharira / जातिसूत्रीय शरीर)
Prepare medicated oil from vetasa, manjiṣhthā, mrināla, sandal, padmaka and khasha and bark of latex-exuding plants.
— Charaka Samhita, Chikitsa Sthana — Therapeutic Principles, Chapter 12: Edema Treatment (Shvayathu Chikitsa / श्वयथुचिकित्सा)
Source: Charaka Samhita, Chikitsa Sthana — Therapeutic Principles, Chapter 22: Thirst Disorders Treatment (Trishna Chikitsa / तृष्णाचिकित्सा); Sharira Sthana — Human Body & Embryology, Chapter 8: Guidelines for Lineage (Jatisutriya Sharira / जातिसूत्रीय शरीर); Chikitsa Sthana — Therapeutic Principles, Chapter 12: Edema Treatment (Shvayathu Chikitsa / श्वयथुचिकित्सा)
References in Sharangadhara Samhita
A comprehensive anti-leucoderma paste: Vakuchi (Psoralea corylifolia), Vetasa (Salix caprea/willow), Laksha (lac), Kakodumbarika (Ficus hispida), Kana (Pippali/Piper longum), Rasanjana (Berberis extract), iron powder (Ayash Churna), and black sesame (Krishna Tila) in equal parts.
— Sharangadhara Samhita, Uttara Khanda, Chapter 11: Lepa Vidhi (Topical Paste Application)
A comprehensive anti-leucoderma paste: Vakuchi (Psoralea corylifolia), Vetasa (Salix caprea/willow), Laksha (lac), Kakodumbarika (Ficus hispida), Kana (Pippali/Piper longum), Rasanjana (Berberis extract), iron powder (Ayash Churna), and black sesame (Krishna Tila) in equal parts.
— Sharangadhara Samhita, Uttara Khanda, Chapter 11: Lepa Vidhi (Topical Paste Application)
Source: Sharangadhara Samhita, Uttara Khanda, Chapter 11: Lepa Vidhi (Topical Paste Application)
References in Sushruta Samhita
For a child afflicted by Shakuni, a knowledgeable physician should use a decoction of Vetasa (cane/willow), Amra (mango), and Kapittha (wood apple) for sprinkling.
— Sushruta Samhita, Uttara Tantra, Chapter 30: Shakunipratishedha
Gundra, rice, shaivala (aquatic moss), shailabheda, daruharidra (tree turmeric), ela (cardamom), utpala (blue lotus), rodhra, abhra (mica), lotus petal, sugar, darbha (sacred grass), tala (palmyra), rodhra, vetasa (cane), and padmaka.
— Sushruta Samhita, Uttara Tantra, Chapter 10: Pittabhishyanda Pratishedha Adhyaya (Chapter on Treatment of Pitta-type Conjunctivitis)
For a child afflicted by Shakuni, a knowledgeable physician should use a decoction of Vetasa (cane/willow), Amra (mango), and Kapittha (wood apple) for sprinkling.
— Sushruta Samhita, Uttara Tantra, Chapter 30: Shakunipratishedha
Source: Sushruta Samhita, Uttara Tantra, Chapter 30: Shakunipratishedha; Uttara Tantra, Chapter 10: Pittabhishyanda Pratishedha Adhyaya (Chapter on Treatment of Pitta-type Conjunctivitis)
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.