Educational information, not medical advice — ask your doctor or midwife.
Kaṇṭakārī is a thorny, low-growing plant used in Ayurveda mainly for coughs, wheezing and chest congestion. In Ayurvedic terms it is a single drug (one plant used on its own, not a formula). Its Latin name is Solanum virginianum, and in English it is called yellow-berried nightshade.
The whole plant is used, including the root, and it is one of the ten roots of the classical Dashamula group. It is usually taken as a decoction (a water boil-down), a powder, or as part of a syrup for the chest.
Here is the honest evidence picture. Kaṇṭakārī has a long and well-documented place in Ayurveda, Siddha and Unani practice, but good human trials are very few and small. Long traditional use tells you a plant has been valued; it does not by itself prove that it works, and that difference applies to everything on this page.
The short answer: nobody has proven how it works in people, and the explanations below are proposed, not settled.
Laboratory and animal work suggests the plant may relax the smooth muscle in the airways (the muscle that tightens during wheezing) and may loosen mucus so it is easier to cough up. Some animal studies also report anti-inflammatory and mild fever-lowering effects.
In classical Ayurvedic language it is described as hot, light and drying, used to clear kapha (thick mucus) from the chest. That is a traditional framework for choosing the herb, not a measured biological mechanism.
Common forms include:
Dried whole-plant or root powder (churna).
Decoction (kwatha or kashaya), where the dried plant is boiled in water and reduced.
Fresh juice (svarasa) of the whole plant, used in some classical texts.
Cough syrups and compound formulas that list Kaṇṭakārī among several herbs, such as Kaṇṭakārī Avaleha and Dashamula preparations.
Quality varies a lot between suppliers. Look for a product that names the Latin species, the plant part used and a batch or lot number.
Kaṇṭakārī appears in the oldest surviving Ayurvedic texts, including the Charaka Samhita and Sushruta Samhita, where it is grouped with herbs for cough and breathing trouble. It is one of the ten roots of Dashamula, a group used very widely in classical formulas.
The same plant is a staple in Siddha practice in south India, where it is known as kandankathiri, and it appears in Unani texts as well. That cross-tradition record is why its traditional standing is rated at the top tier.
Its modern research record is much thinner than its textual record.
See a doctor promptly if your cough lasts more than three weeks, brings up blood, or comes with fever, night sweats or unexplained weight loss.
Get urgent medical help if you have severe breathlessness, chest tightness that does not ease, blue or grey lips, confusion, a very slow or irregular heartbeat, or repeated vomiting after taking this plant.
Stop taking it and speak to a pharmacist or doctor if you get a rash, swelling of the face or tongue, or stomach pain that does not settle within a day.
Evidence grades and traditional-use labels are explained in our methodology. Nothing here is medical advice.
What it is typically used for, usual dose, cautions, and the study behind it where real trial data exists.
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