Dadrughna: Traditional Uses, Evidence & Safety

TL;DR

Dadrughna ("destroyer of ringworm") is identified with Cassia alata, the candle bush, whose leaves are traditionally crushed and applied to fungal skin infections. Laboratory studies confirm antifungal activity against ringworm-type fungi, and small clinical observations report benefit for pityriasis versicolor: but rigorous human trials are still lacking.

What it is

Dadrughna (also Dadrumardana, from dadru, "ringworm/dermatophytosis," + ghna, "destroyer") is the Sanskrit drug name identified with Cassia alata Linn. (syn. Senna alata), a shrub of the legume family (Fabaceae) known in English as the candle bush or ringworm bush (Sanskrit Names of Drugs with Latin Synonyms). A note on identity: the name dadrughna is also applied to Cassia tora in some sources (that plant is covered separately in our Chakramarda article). This article follows the drug-name index identifying Cassia alata and focuses on it (Indian Medicinal Plants compendium). The leaves are the part used. Reported constituents include anthraquinones (such as emodin), the flavonoid glycoside kaempferol-3-O-gentiobioside, which has shown anti-inflammatory and analgesic activity in laboratory work, and fatty acids such as stearidonic acid identified in the active fractions (Cassia alata review; Pharmaceuticals, 2024).

Traditional use

The name is the use: dadrughna means "that which destroys dadru," the classical term for ringworm-like skin lesions. Empirically, in Indonesia the leaves of Cassia alata (candle bush, ketepeng cina) have long been crushed and used as a topical antifungal agent (Pharmaceuticals, 2024). In northeastern Nigeria, leaf decoctions of the plant are used for infectious diseases, and across the tropics the crushed leaves are a folk poultice for ringworm and other skin infections (J Appl Pharm Sci). These are traditional claims, not clinical proof: the research record is examined separately below.

What modern research says

Antifungal activity (laboratory studies)

Aqueous and ethanolic leaf extracts of Cassia alata showed dose-dependent antifungal activity against five clinical isolates of pathogenic fungi, Candida albicans, Microsporum canis, Trichophyton mentagrophytes (classic ringworm agents), Aspergillus niger, and Penicillium notatum, inhibiting the growth of several of them more strongly than the ketoconazole positive control, with minimum inhibitory concentrations ranging from 5.6 to 32.4 mg (in-vitro study, J Appl Pharm Sci).

Antifungal against the pityriasis versicolor fungus (laboratory + computer modeling)

Ethyl acetate and n-hexane fractions of Cassia alata leaves showed concentration-dependent antifungal activity against Malassezia furfur, the yeast behind pityriasis versicolor (tinea versicolor). LC-MS/MS identified five major compounds, and molecular docking showed the strongest binding to lanosterol 14-alpha-demethylase, a key fungal enzyme, by stearidonic acid (in-vitro and in-silico study, Pharmaceuticals, 2024).

Clinical observations (preliminary)

An uncontrolled clinical observation applied a fresh-leaf extract of Senna alata to the skin of 200 patients with pityriasis versicolor, reporting effectiveness over one to three weeks of treatment with no undesired side effects observed. A separate double-blind hospital study in Thailand was also reported (Cassia alata review). Separately, a Phase 1 pilot trial of a 20% Cassia alata cream for tinea versicolor is currently recruiting in Jamaica (ICH GCP registry, NCT05730244).

What the evidence does not support (yet)

The antifungal signals are strong in the laboratory but human evidence remains preliminary: the 200-patient observation had no control group, full details of the Thai double-blind study are not available in the review, and the Jamaican trial is still recruiting. There is no rigorous randomized trial establishing that Cassia alata cures ringworm or pityriasis versicolor in people.

Safety & contraindications

Human safety data for dadrughna are limited. Traditional use is external, crushed leaves or leaf extract applied to the skin, and the 200-patient topical observation reported no adverse effects (Cassia alata review). Internal use is not supported by safety data: the plant contains anthraquinones, the laxative compound class, and one Ayurvedic compendium cautions that excess internal dosing can cause cramping and diarrhea, advising avoidance in pregnancy and caution for people with bowel disorders (Ask-Ayurveda Cassia alata monograph). Patch-test any topical preparation first, and see a clinician for persistent or spreading fungal infections rather than relying on home preparations.

FAQs

What is dadrughna?

Dadrughna ("destroyer of ringworm") is the Sanskrit drug name identified with Cassia alata, the candle bush: a tropical legume whose leaves are traditionally crushed and applied to fungal skin infections (Sanskrit Names of Drugs).

Is dadrughna the same as chakramarda?

They are closely related but treated as distinct here. The name dadrughna is applied to both Cassia alata and Cassia tora in different sources. Our Chakramarda article covers Cassia tora, while this article covers Cassia alata: the plant most directly called the "ringworm bush" in folk use (Indian Medicinal Plants compendium).

How is dadrughna traditionally used for ringworm?

Fresh leaves are crushed into a paste or extract and applied directly to the affected skin: the practice behind the name. In Indonesia this topical use as an antifungal is long established (Pharmaceuticals, 2024). These are traditional practices, not clinically proven treatments.

Does research support cassia alata for fungal skin infections?

In the laboratory, yes: leaf extracts inhibited ringworm-type fungi (Trichophyton, Microsporum) and the pityriasis-versicolor yeast Malassezia furfur in vitro (J Appl Pharm Sci; Pharmaceuticals, 2024). Human evidence is only preliminary, one uncontrolled 200-patient observation, with a proper pilot trial still recruiting.

Is cassia alata safe in pregnancy?

There are no safety data for use in pregnancy. One Ayurvedic compendium advises avoiding internal use in pregnancy as a precaution, given the plant's anthraquinone (laxative-type) constituents (Ask-Ayurveda Cassia alata monograph). Talk to a clinician first.

Can I use it instead of antifungal medicine?

Not on current evidence. Laboratory activity does not equal a proven cure, and the human data are uncontrolled. See a clinician for diagnosis: persistent or spreading fungal infections need proper medical treatment, and delaying effective therapy can worsen them.

No established human dose exists. Without pharmacopoeial or clinical-trial dosing, no recommendation can be made.

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.