Kachnar: Benefits, Evidence & Safety

TL;DR

Kachnar (Bauhinia variegata) is the classical Ayurvedic name for the same tree sold as kanchanar: its bark is the traditional remedy for gandamala, glandular swellings of the neck. Human evidence is thin: the only relevant RCT tested the polyherbal Kanchanara Guggulu as a comparator arm, not a placebo. See our kanchanar article for the full evidence picture.

(58 words. Sources: Gautam, IJAPR critical review; phytopharmacy research review; Vivek et al. 2025, RCT.)

What it is

Kachnar is not a different plant from kanchanar: it is the Hindi name for Bauhinia variegata Linn., a medium-sized deciduous tree of the pea family (Fabaceae), while "kanchanar" is the Sanskrit-derived name used in classical texts and pharmacies (phytopharmacy research review; Gautam, IJAPR critical review). English names include Mountain Ebony, orchid tree, and camel's foot (same phytopharmacy review). This article is a naming and cross-reference entry: the botanical, pharmacological, and clinical evidence is covered in our sibling article, Kanchanar: Benefits, Evidence & Safety.

A taxonomic caution from the literature: other Bauhinia species (notably B. purpurea, called Kovidar) are sometimes used interchangeably as Kanchanara in Ayurvedic practice (Gautam, IJAPR).

Traditional use

Classical Ayurveda uses kachnar's stem bark as Gandamalanashaka: "dispeller of gandamala," the category covering cervical lymph-node swellings, scrofulous glands, and goiter-like neck swellings (Gautam, IJAPR). The classical action list also includes grahi (absorbent), krimighna (anthelmintic), kushtaghna (skin-disease remedy), and vranaropaka (wound-healing) (same review). One feature of the kachnar tradition that distinguishes it from the pharmacy-focused kanchanar literature is the culinary one: the tree's leaves, flowers, and flower buds have long been used as vegetables in India (IJAPC review). These are traditional uses, not clinical proof.

What modern research says

Because kachnar and kanchanar are the same plant, the evidence base is the same: see Kanchanar for the full assessment. The summary position:

Dosage

No clinical dose of kachnar bark alone has been tested in humans. The only trial regimen on record is for the polyherbal formulation Kanchanara Guggulu (two 500 mg tablets thrice daily with water for 60 days): a comparator-arm regimen, not a dose for plain kachnar powder (Vivek et al.). Do not infer a dose from this entry.

Safety & contraindications

Human safety data for kachnar are sparse. As with kanchanar: never use it as a replacement for thyroid medication: the only RCT studied the formulation as an add-on to stable levothyroxine, and stopping thyroid medication risks serious harm (Vivek et al.). Any neck swelling needs medical evaluation first. Avoid use in pregnancy and breastfeeding for lack of data; anyone with thyroid disease, heart disease, or on prescription medication should involve their doctor.

FAQs

Is kachnar the same as kanchanar?

Yes. Kachnar (Hindi) and kanchanar (Sanskrit) are names for the same tree, Bauhinia variegata (Gautam, IJAPR). Our kanchanar article covers the full evidence base for the plant.

What is kachnar used for in Ayurveda?

Classically, its stem bark is the remedy for gandamala, glandular swellings of the neck, including goiter-like conditions, under the epithet Gandamalanashaka (Gautam, IJAPR). It is rarely used alone; the classical formulation is Kanchanara Guggulu.

Can kachnar cure thyroid problems?

No human evidence supports this. The single relevant trial tested a polyherbal tablet as a comparator arm in an add-on study, not kachnar alone against placebo (Vivek et al.). See kanchanar for the detailed evidence review.

Are kachnar flowers edible?

Traditionally yes: the flowers, flower buds, and leaves of the tree have long been eaten as vegetables in India (IJAPC review). Edible tradition is not the same as medicinal evidence.

Is kachnar safe?

Human safety data are limited. Avoid it in pregnancy and breastfeeding, never substitute it for thyroid medication, and consult a doctor if you have thyroid disease or take prescription drugs.

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.