Overview
Nut Grass is one of the herbs traditionally used in Ayurveda for malabsorption. Musta is the cooling rhizome that stops Pitta diarrhea and Grahani malabsorption. 3-6g of powder kindles Agni without heating, anchor of Mustadi Kwatha.
How Nut Grass Helps with Malabsorption
According to Ayurvedic pharmacology, Nut Grass has specific properties that make it valuable for addressing malabsorption:
- Potency (Virya): Sheeta (cold)
- Post-digestive (Vipaka): Katu (pungent)
- Taste (Rasa): Tikta (bitter), Katu (pungent), Kashaya (astringent)
- Qualities (Guna): Laghu (light), Ruksha (dry)
Safety & Precautions
Nut Grass is generally well tolerated at standard doses and has a long record of everyday use. Its cautions follow directly from its qualities: it is light, dry and clearing, so trouble comes mainly when it is taken by the wrong person or in too large a dose.
Contraindications
The classical caution is constipation and excess Vata. Because Nut Grass is drying, it should be avoided in constipation or when Vata is high, with signs such as dryness, anxiety or cramping. If you lean that way and still want to use it, keep doses small, pair it with ghee or warm milk, and run shorter courses.
Very high doses, above about 6 g a day over long periods, can cause excess dryness. Stay within 1 to 3 g twice daily unless a practitioner advises otherwise.
Medication interactions
Nut Grass has a mild glucose-lowering effect. If you take metformin, insulin or other diabetes medication, monitor your blood sugar during the first weeks. It has no documented interaction with common antifungals, and it does not interfere with oral rehydration solution.
Pregnancy and nursing
Nut Grass promotes menstrual flow and has a uterine-active history, so check with a practitioner before using it if there is any chance you are pregnant. Standard powder doses have a long history of use for digestive upset in pregnancy, but concentrated decoctions and doses above 5 to 6 g a day should be avoided. See the populations section below for more detail.
A note on the name
The Sushruta Samhita (Kalpa Sthana, Chapter 2) lists a Mustaka among thirteen poisonous bulbs and describes shivering and numbness of the limbs as its effects. The Charaka Samhita (Chikitsa Sthana 23) also names mustaka among poisonous roots. This is a good reason to buy only dried rhizome clearly labelled Cyperus rotundus and to stay within standard doses.
When to see a doctor
Nut Grass supports, it does not replace medical care. Seek help for bloody stools, severe dehydration, high or persistent fever, blood in the urine, severe pain, or symptoms that last beyond a few days.
Other Herbs for Malabsorption
See all herbs for malabsorption on the Malabsorption page.
▶ Classical Text References (5 sources)
) or water mixed with honey, or water boiled with jalada (musta – Nut grass).
— Astanga Hridaya Sutrasthan, Ritucharya adhyaya Seasonal
Tikta Gana – group of bitters :त तः पदोल ाय ती वालकोशीर च दनम ् भू न ब न ब कटुका तगरा गु व सकम ् न तमाला वरजनी मु त मूवाट पकम पाठापामागकां यायोगुडू चध वयासकम ् प चमल ू ं महा या यौ वशाल अ त वषावचा Patoli, Trayanti – Gentiana kurroa, Valaka, Usira – Vetiveria zizanioides, Chandana – Sandalwood, Bhunimba – The creat (whole plant) – Andrographis paniculata, Nimba – Neem – Azadirachta indica, Katuka – Picrorhiza kurroa, Tagara – Indian Valerian (root) – Valeriana wallichi, Aguru, Vatsaka – Hol
— Astanga Hridaya Sutrasthan, Rasabhediyam Tastes, Their
Source: Astanga Hridaya Sutrasthan, Ritucharya adhyaya Seasonal; Rasabhediyam Tastes, Their
The 500 ml of milk prepared with paste of 10 gm each punarnava, dried ginger and mustaka;
— Charaka Samhita, Chikitsa Sthana — Therapeutic Principles, Chapter 12: Edema Treatment (Shvayathu Chikitsa / श्वयथुचिकित्सा)
Take 40 gm fine powder each of svarajjikā and yava-kshara, four varieties of salt, iron bhasma, trikatu, triphala, pippalimula, pealed seeds of vidanga, mustaka, ajamodā, devadāru, bilva, indrayava, root of chitraka, pāthā, ativishā and liquorice;
— Charaka Samhita, Chikitsa Sthana — Therapeutic Principles, Chapter 12: Edema Treatment (Shvayathu Chikitsa / श्वयथुचिकित्सा)
Take kuṣṭha, aguru, devadāru, kaunti, cinnamon, padmaka, cardamom, sugandhabālā, palāśa, mustaka, priyangu, thauneyaka, nāgakeśara, jatāmāmsi, tālisapatra, plava, tejapatra, coriander, sriveshtaka, dhyāmaka, piper longum, sprikkā and nakha.
— Charaka Samhita, Chikitsa Sthana — Therapeutic Principles, Chapter 12: Edema Treatment (Shvayathu Chikitsa / श्वयथुचिकित्सा)
The poisons of the immobile (earthen and plant) origin are: the roots (including rhizomes) of mustaka, puskara, kraunca, vatsanabha (Aconitum ferox), balahaka, karkata, kalakuta, karavira (Nerium indicum / Cerbera thevetia), palaka, indrayudha taila, meghaka, kusa-puspaka, rohisa, pundarika, langalaki (Gloriosa superb), anjanabhaka, sankoca, markata, sringi-visa, halahala, and such other poisonous roots.
— Charaka Samhita, Chikitsa Sthana — Therapeutic Principles, Chapter 23: Poison Treatment (Visha Chikitsa / विषचिकित्सा)
[190-191] (pippali, pippalimula, chavya, chitraka, nagara), talisapatra, ela, maricha, twak, alkali of palasa, mustaka and yavaksara.
— Charaka Samhita, Chikitsa Sthana — Therapeutic Principles, Chapter 26: Three Vital Organs Treatment (Trimarmiya Chikitsa / त्रिमर्मीयचिकित्सा)
Source: Charaka Samhita, Chikitsa Sthana — Therapeutic Principles, Chapter 12: Edema Treatment (Shvayathu Chikitsa / श्वयथुचिकित्सा); Chikitsa Sthana — Therapeutic Principles, Chapter 23: Poison Treatment (Visha Chikitsa / विषचिकित्सा); Chikitsa Sthana — Therapeutic Principles, Chapter 26: Three Vital Organs Treatment (Trimarmiya Chikitsa / त्रिमर्मीयचिकित्सा)
Patoladi Kvatha: Patola (Trichosanthes dioica), Madhuka (Glycyrrhiza glabra), Triphala, Katuka (Picrorhiza kurroa), Guduchi (Tinospora cordifolia), Mustaka (Cyperus rotundus), Parpata (Fumaria indica), and the two types of Chandana (red and white sandalwood) — these should be decocted in water.
— Sharangadhara Samhita, Madhyama Khanda, Chapter 1: Svarasadikalpana (Svarasa, Kalka, Kvatha, etc.)
Triphala, Mustaka (Cyperus rotundus), Khadira (Acacia catechu), Nimba (Azadirachta indica), the two Haridras (turmeric and tree turmeric), Patola (Trichosanthes dioica), Guduchi (Tinospora cordifolia), Katuka (Picrorhiza kurroa), and Vidanga (Embelia ribes) — this decoction destroys Kushtha (skin diseases).
— Sharangadhara Samhita, Madhyama Khanda, Chapter 2: Kvathakalpana (Decoction Preparations)
Avipattikar Churna: Shunthi (dry ginger — Zingiber officinale), Maricha (black pepper — Piper nigrum), Pippali (long pepper — Piper longum), Amalaki (Emblica officinalis), Vibhitaki (Terminalia bellirica), Haritaki (Terminalia chebula), Mustaka (Cyperus rotundus), Vidanga (Embelia ribes), and Sharkara (sugar) —.
— Sharangadhara Samhita, Madhyama Khanda, Chapter 3: Churnakalpana (Powder Preparations)
Trivrit (Operculina turpethum), Svarnapatri (Cassia angustifolia, senna), Mustaka (Cyperus rotundus), Madhuka (Glycyrrhiza glabra, licorice), Bala (Sida cordifolia), both Haridras (turmeric and daruharidra), Nagara (Zingiber officinale, dry ginger), Triphala, and Katurohi (Picrorhiza kurroa).
— Sharangadhara Samhita, Parishishtam, Chapter 18: Brain Tremor / Parkinsonism (Mastishka Vepana)
Trivrit (Operculina turpethum), Svarnapatri (Cassia angustifolia, senna), Mustaka (Cyperus rotundus), Madhuka (Glycyrrhiza glabra, licorice), Bala (Sida cordifolia), both Haridras (turmeric and daruharidra), Nagara (Zingiber officinale, dry ginger), Triphala, and Katurohi (Picrorhiza kurroa).
— Sharangadhara Samhita, Parishishtam, Chapter 17: Brain Tremor / Parkinsonism (Mastishka Vepana)
Source: Sharangadhara Samhita, Madhyama Khanda, Chapter 1: Svarasadikalpana (Svarasa, Kalka, Kvatha, etc.); Madhyama Khanda, Chapter 2: Kvathakalpana (Decoction Preparations); Madhyama Khanda, Chapter 3: Churnakalpana (Powder Preparations); Parishishtam, Chapter 18: Brain Tremor / Parkinsonism (Mastishka Vepana); Parishishtam, Chapter 17: Brain Tremor / Parkinsonism (Mastishka Vepana)
Musta (nut grass), phena (coral calcium), sea utpala (lotus), krimi (worm-wood), ela (cardamom), amalaki seeds, talisha, shaila (rock), gairika (red ochre), ushira (vetiver), and shankha (conch) — these ground with breast milk make the anjana.
— Sushruta Samhita, Uttara Tantra, Chapter 10: Pittabhishyanda Pratishedha Adhyaya (Chapter on Treatment of Pitta-type Conjunctivitis)
Mahaushada (ginger), pippali (long pepper), musta (nut grass), saindhava (rock salt), and white maricha (pepper) — ground with matulunga (citron) juice — this eye anjana quickly destroys pishtaka (paste-like eye lesion).
— Sushruta Samhita, Uttara Tantra, Chapter 11: Kaphabhishyanda Pratishedha Adhyaya (Chapter on Treatment of Kapha-type Conjunctivitis)
Source: Sushruta Samhita, Uttara Tantra, Chapter 10: Pittabhishyanda Pratishedha Adhyaya (Chapter on Treatment of Pitta-type Conjunctivitis); Uttara Tantra, Chapter 11: Kaphabhishyanda Pratishedha Adhyaya (Chapter on Treatment of Kapha-type Conjunctivitis)
Kala-kuta, Vatsa-nabha, Sarshapaka, Palaka, Kardamaka, Vairataka, Mustaka, Sringi-visha, Prapaun-darika, Mulaka, Halahala, Maha-visha and Karkataka, numbering thirteen in all, are the bulb-poisons.
— Sushruta Samhita, Kalpa Sthana, Chapter 2: Sthavara-Visha-Vijnaniya
Shivering and a numbness of the limbs are the effects of a case of Mustaka-poisoning.
— Sushruta Samhita, Kalpa Sthana, Chapter 2: Sthavara-Visha-Vijnaniya
Kala-kuta, Vatsa-nabha, Sarshapaka, Palaka, Kardamaka, Vairataka, Mustaka, Sringi-visha, Prapaun-darika, Mulaka, Halahala, Maha-visha and Karkataka, numbering thirteen in all, are the bulb-poisons.
— Sushruta Samhita, Sthavara-Visha-Vijnaniya
Shivering and a numbness of the limbs are the effects of a case of Mustaka-poisoning.
— Sushruta Samhita, Sthavara-Visha-Vijnaniya
Source: Sushruta Samhita, Kalpa Sthana, Chapter 2: Sthavara-Visha-Vijnaniya; Sthavara-Visha-Vijnaniya
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.