Photo: Jeevan Jose, Kerala, India / Wikimedia Commons, CC BY-SA 4.0
Musta मुस्ता
Cyperus rotundus · Cyperaceae
Also known as: Nagarmotha, Nut Grass, Nagar Motha
Part used: Rhizome
Musta (Cyperus rotundus) is nut grass, a persistent sedge whose small tubers are one of Ayurveda's most-used digestive drugs. It is bitter and cooling, which makes it unusual among digestives, and it is the classical choice for diarrhoea with fever and for fevers with digestive upset.
| Rasa (taste) | Tikta (Bitter), Kashaya (Astringent) |
|---|---|
| Guna (qualities) | Laghu (Light), Ruksha (Dry) |
| Virya (potency) | Ushna (Hot) |
| Vipaka | Katu (Pungent) |
| Dosha | Balances Kapha & Vata |
| Prabhava | Classical systemic action |
Key takeaways
- Botanical name: Cyperus rotundus
- Part used: Rhizome
- Dosha action: Balances Kapha & Vata
- Typical dose: Powder 1–3 g or decoction; a common ingredient of digestive formulas.
Musta in other languages
Introduction
Musta (Cyperus rotundus), or Nagarmotha, is a classical digestive and Pitta-pacifying herb. Its aromatic rhizome kindles digestion while cooling the gut, making it a key remedy for diarrhoea, fever and sluggish digestion.
Classification
Of the Cyperaceae family, Musta is grouped among the Deepana (digestive) and Grahi (absorbent) dravyas. Its bitter-pungent-astringent taste and cooling potency kindle Agni without aggravating Pitta.
Uses & benefits
Musta is the classical drug for the loose, painful bowel with fever. Grahi and Deepana at once, it is used in diarrhoea with undigested stool, in Grahani and in fevers with digestive weakness. It is also a mild emmenagogue and appears in women's formulations.
Musta for diarrhoea with fever
Its defining indication. Deepana and Grahi at once, and cooling rather than heating, which suits infective diarrhoea precisely.
Musta for indigestion
A bitter Deepana drug used for poor appetite and incomplete digestion where a heating spice would aggravate.
Musta for fever
Named across the classical fever formulations, particularly where digestion is disturbed.
Musta for Ama
An Amapachana drug used where undigested residue is thought to underlie heaviness and low-grade fever.
Musta for menstrual disorders
Used in painful and irregular periods, and in excessive bleeding on its astringent action.
Musta for lactation
Traditionally used to improve the quality of breast milk rather than the quantity.
Musta for obesity
Named among the Medohara drugs, its bitter drying character being the basis.
Musta for burning and thirst
Cooling, used in Pitta conditions with heat and excessive thirst.
Musta for skin complaints
Applied externally as a paste in itching and inflammatory skin conditions.
Musta in Mustakarishta and Musta Churna
The lead drug of the classical preparations for diarrhoea and digestive disorders.
Dosage — how much to take
Powder 1–3 g or decoction; a common ingredient of digestive formulas. Follow your Vaidya's advice.
Dosage varies with age, constitution and condition — confirm with a qualified Vaidya.
Traditional uses — questions answered from the classical texts
Answers are drawn from the citations and properties recorded for this drug. No chapter-and-verse reference appears that the record does not carry.
Which classical texts describe Musta?
The citations held for Musta in this catalogue are: Charaka Samhita (Atisara & Jwara context); Bhavaprakasha Nighantu (Karpuradi Varga).
What does the Charaka Samhita record about Musta?
Cited for diarrhoea and fever. Reference: Charaka Samhita — Atisara & Jwara context.
What does the Bhavaprakasha Nighantu record about Musta?
Described as Deepana and Grahi. Reference: Bhavaprakasha Nighantu — Karpuradi Varga.
What is Musta traditionally used for in Ayurveda?
Musta is the classical drug for the loose, painful bowel with fever. Grahi and Deepana at once, it is used in diarrhoea with undigested stool, in Grahani and in fevers with digestive weakness. It is also a mild emmenagogue and appears in women's formulations.
What are the Ayurvedic properties of Musta?
Rasa Tikta (Bitter), Kashaya (Astringent), Guna Laghu (Light), Ruksha (Dry), Virya Ushna (Hot), Vipaka Katu (Pungent). Dosha action: Balances Kapha & Vata. Prabhava: Classical systemic action.
Why is Musta classified the way it is?
In dravya-guna a drug's dosha action follows from its taste, qualities, potency and post-digestive effect. Musta carries Ushna (Hot) virya and Katu (Pungent) vipaka, which together give the recorded action: Balances Kapha & Vata.
Which part of Musta is used medicinally?
The part used is Rhizome.
How much Musta is taken, and how?
Powder 1–3 g or decoction; a common ingredient of digestive formulas. Follow your Vaidya's advice. Dosage varies with age, constitution and condition — confirm it with a qualified Vaidya.
When should Musta be avoided?
Generally safe in classical doses; use under guidance in pregnancy.
Where does Musta grow?
Musta is a sedge with aromatic tubers, growing as a common weed across moist fields, banks and waste ground throughout India.
Classical references
- Bhavaprakash Nighantu — Karpuradi Varga
Described as Deepana and Grahi. - Charaka Samhita — Atisara & Jwara context
Cited for diarrhoea and fever.
Modern research
-
Phytochemistry, data mining, pharmacology, toxicology and the analytical methods of Cyperus rotundus L. (Cyperaceae): a comprehensive review
(see source). (2023)
A comprehensive review documenting Cyperus rotundus (Musta)'s anti-inflammatory, analgesic, antidiarrhoeal and neuroprotective pharmacology.
View study doi:10.1007/s11101-023-09870-3 -
Studies on the activity of Cyperus rotundus Linn. tubers against infectious diarrhea
(see source). (2011)
A study reporting antidiarrhoeal activity of Cyperus rotundus tubers against infectious diarrhoea.
View study doi:10.4103/0253-7613.81502
Safety & precautions
Generally safe in classical doses; use under guidance in pregnancy.
Where it grows
Musta is a sedge with aromatic tubers, growing as a common weed across moist fields, banks and waste ground throughout India.
Frequently asked questions
What is Musta used for?
Diarrhoea with fever is its defining indication — it kindles digestion and checks the stool at the same time, while being cooling rather than heating. It is also used for indigestion, fever, menstrual disorders and obesity.
What is the dose of Musta?
Tuber powder 3–6 g per day, or decoction 40–80 ml twice daily. It is commonly given within a compound rather than alone.
Why is Musta preferred over ginger for some digestive problems?
Because it is cooling while still being Deepana. In diarrhoea with fever, or indigestion in a Pitta constitution, a heating spice like ginger aggravates the picture — Musta corrects digestion without adding heat.
What is Musta called in Hindi?
Nagarmotha or Motha. In English it is nut grass or purple nutsedge. It is regarded worldwide as one of the most persistent agricultural weeds, which makes supply plentiful.
Are there side effects of Musta?
Well tolerated at classical doses. Bitter and drying, so prolonged use may aggravate Vata. Consult a physician in pregnancy, since it has traditional use affecting the menstrual cycle.
Is Musta good for weight loss?
It is named among the Medohara drugs and appears in classical weight formulations, working through its bitter, drying and digestive action. It is supportive within a broader approach rather than effective alone.
Which part of nut grass is used?
The small dark tubers on the roots, dried and powdered. The grass itself is not the medicinal part.
