Kantakari: Evidence, Dosage & Safety

TL;DR

Kantakari (Solanum xanthocarpum), a prickly nightshade herb in the Dashamoola group, is a classical Ayurvedic remedy for cough and breathing difficulty. A 1999 pilot study found a single 300 mg dose of whole-plant powder significantly improved lung-function measures in mild-to-moderate asthma within two hours: less than salbutamol or deriphylline. Animal studies support anti-inflammatory activity; human safety data are limited.

What it is

Kantakari is Solanum xanthocarpum Schrad. & Wendl., a diffuse, prickly herb in the nightshade family (Solanaceae) and a member of dashamula, the classical Ayurvedic group of ten herbs (AYU journal). Its characteristic constituents include steroidal alkaloids such as solasodine, to which its bronchodilator activity has been attributed in pharmacological reports (PMC polyherbal study).

Traditional use

Classical Ayurvedic texts describe kantakari for śvāsa (dyspnea/asthma), kāsa (cough), hikka (hiccup), mutrakṛcchra (dysuria), and śūla (colicky pain) (J Pharmacognosy & Phytochemistry review, 2025). Its Ayurvedic pharmacology is katu rasa (pungent taste), laghu and ruksha guna (light, dry qualities), ushna virya (hot potency), and katu vipaka: and it belongs to both the Dashamoola and Panchamoola groups (same review). It is the namesake ingredient of Kantakari Avaleha, a classical multi-herb formulation for respiratory conditions. A prospective, randomized, open-label trial comparing Kantakari Avaleha with a modified granule form in Tamaka Shwasa (bronchial asthma) was registered with the Clinical Trial Registry of India (CTRI/2019/04/018465), and the completed trial has since been reported in AYU: 69 patients with mild-to-moderate asthma received 6 g twice daily for 60 days, and both groups showed statistically significant improvements in symptoms and lung-function measures, with no significant difference between the two forms (completed trial report). These traditional and formulation uses are not the same as proof for kantakari alone: the trial evidence follows.

What modern research says

Bronchial asthma (pilot clinical study)

In a 1999 pilot study published in the Journal of Ethnopharmacology, researchers tested a single 300 mg oral dose of whole-plant powder of S. xanthocarpum (and separately S. trilobatum) in people with mild-to-moderate bronchial asthma (Govindan et al., 1999). Lung function (FVC, FEV1, peak expiratory flow rate, and FEF25–75%) was measured by spirometer before and two hours after the dose, with the standard bronchodilators salbutamol (4 mg) and deriphylline (200 mg) used for comparison (same study). Treatment with either herb significantly improved the pulmonary-function parameters: but the effect was smaller than that of either standard drug, and no untoward effects were reported during the study (same study). The authors called for more detailed studies of mechanism and therapeutic utility. A follow-up multi-dose study by the same team appeared in Phytotherapy Research in 2004 (DOI: 10.1002/ptr.1555); its full results were not accessible for verification in this review, so no claims are drawn from it here.

Anti-inflammatory activity (animal study)

In rats, an ethanol extract of the whole plant (10, 30, and 100 mg/kg) showed no acute anti-inflammatory effect against carrageenan- or histamine-induced paw edema, but 100 mg/kg given daily for 7 days reduced granuloma formation in the cotton-pellet model: although the reductions were not statistically significant, so this is at most weak animal support for the traditional anti-inflammatory use, in animals only (AYU journal).

Proposed mechanism (preclinical)

The bronchodilator effect has been attributed to solasodine, possibly acting as a histamine (H1) antagonist on bronchial smooth muscle: a hypothesis from laboratory work on isolated tissue, not an established human mechanism (PMC polyherbal study).

What the evidence does not support (yet)

There are no large, placebo-controlled trials of kantakari for asthma or cough. The single-herb human evidence is one small pilot study of a single dose. Kantakari is not a substitute for prescribed asthma medication.

Dosage

The research regimen used in the 1999 pilot study was a single 300 mg oral dose of whole-plant powder: a research dose, not a personal recommendation (Govindan et al., 1999). No pharmacopoeial single-herb dose for kantakari was located, and multi-herb formulations such as Kantakari Avaleha cannot establish a kantakari-alone dose. Do not self-dose for asthma.

Safety & contraindications

In the 1999 pilot study, the single 300 mg dose produced no untoward effects: but that is a single-dose observation in a small study, not a safety profile (Govindan et al., 1999). A review of the plant reports that hot-water extract showed toxicity in rats at 200 mg/kg (the primary data behind this claim could not be accessed, so treat it as a review-reported signal rather than a verified finding), and states that no clinical (human) toxicity data are available (Therapeutic potentials of Kantakari review). Asthma can be life-threatening: never replace or delay prescribed treatment with an herb, and talk to a qualified practitioner before any use: especially in pregnancy, breastfeeding, or alongside asthma medications.

FAQs

Does kantakari help asthma?

One small 1999 pilot study found a single 300 mg dose of whole-plant powder significantly improved lung-function measures two hours later in mild-to-moderate asthma, though less than salbutamol or deriphylline (Govindan et al., 1999). That is the entire single-herb human evidence base: one pilot study, not proof of a treatment effect.

What dose of kantakari was studied?

A single 300 mg oral dose of whole-plant powder in the 1999 pilot study (Govindan et al., 1999). No pharmacopoeial single-herb dose was located. Do not self-dose for asthma.

How might kantakari work for breathing?

Laboratory work attributes a bronchodilator effect to the steroidal alkaloid solasodine, possibly by blocking histamine (H1) receptors on bronchial smooth muscle (PMC study). This is a preclinical hypothesis, not an established human mechanism.

Is kantakari safe?

Human safety data are limited to a single small pilot study in which one dose caused no reported side effects (Govindan et al., 1999). A secondary review reports hot-water-extract toxicity in rats at 200 mg/kg, but the primary data behind that claim could not be accessed; no human toxicity data are available (Kantakari review). Never use it as a substitute for prescribed asthma medication.

What is Kantakari Avaleha?

A classical multi-herb Ayurvedic formulation named for kantakari, used for respiratory conditions. The completed trial (69 patients with mild-to-moderate asthma, reported in AYU) compared 6 g twice daily for 60 days of the traditional avaleha with a modified granule form. Both groups improved significantly on symptoms and lung-function measures, with no significant difference between the forms (trial report): but a formulation trial cannot establish what kantakari alone does.

Sources

Disclaimer

This article is for educational purposes only and is not medical advice. Herbal products can interact with medications and are not suitable for everyone. Talk to a qualified healthcare practitioner before use — especially if you are pregnant, breastfeeding, managing a medical condition, or taking prescription medicines.