Langali (Gloriosa Superba): Colchicine Toxicity & Why It Is Not a Home Remedy

TL;DR

Langali (Gloriosa superba, the glory lily) contains colchicine and is classed in Ayurvedic toxicology as a poisonous root (moolavisha), one of nine semi-poisonous upavisha drugs. Ingestion has caused multi-organ poisoning, bone-marrow failure, and death; treatment is supportive only, with no antidote. There are no human efficacy trials, and this article gives no dosage: langali is definitely not a home remedy.

What it is

Langali is the Ayurvedic name for Gloriosa superba L., a tuberous climbing herb with showy red-and-yellow flowers, known in English as the glory lily, fire lily, or tiger's claw. It grows wild across tropical Asia and Africa (Springer phytopharmacology review). All parts of the plant contain colchicine and related alkaloids, with the highest concentration in the seeds and tubers: and acute intoxication following ingestion is indistinguishable from a colchicine overdose (Asia Pacific Journal of Medical Toxicology case report). This is a poison that happens to have a traditional medical history, not a herb that happens to be slightly toxic.

Traditional use

Ayurveda's toxicology branch (agadatantra) classifies langali as moolavisha (a poisonous root) and as one of the nine upavishas: semi-poisonous drugs that traditional physicians used only after specialized purification (IJAPR review of langali from the agadatantra perspective). The traditional properties attributed to it include shothahara (anti-inflammatory), vranahara (wound-healing), krimighna (wormicidal), and garbhapatana (abortifacient) actions, and texts suggest its use for haemorrhoids, worm ulcers, skin conditions, and delayed labour: always after thorough purification, on the traditional principle that a poison, properly purified and correctly dosed, could act as ambrosia (International Journal of Herbal Medicine review of langali). Notably, the purification methods are not described in the Samhitas themselves; they appear in later texts such as the Ayurveda Prakasha and in traditional Kerala agadatantra manuals (IJAPR review).

Langali also appears as an ingredient in classical compound formulations, including Kalakuta Rasa, Brihatmarichaditaila, Chitrakaditaila, Mahavishgarbha Taila, Nirundi Taila, and Langali Gutika (Springer review). These are records of traditional practice, not clinical proof: and in Sri Lanka, where the plant is known as niyangala, it has historically been a common method of deliberate self-harm in rural areas (APJMT case report).

What modern research says

Poisoning and toxicology (case reports and reviews)

The modern literature on Gloriosa superba is overwhelmingly toxicological. A case report in BMC Research Notes describes a young man who ingested the plant and developed fever, diarrhoea, confusion, bleeding, and progressive pancytopenia with liver dysfunction. His illness mimicked severe tropical infections such as leptospirosis or dengue until, on day 9 of illness, he began losing his hair and was totally bald by day 14: the alopecia being a hallmark of colchicine toxicity. The authors attribute the toxicity to the anti-mitotic effects of colchicine and gloriosine on rapidly dividing cells (case report, PubMed).

A case series review in the Asia Pacific Journal of Medical Toxicology lays out the three clinical phases of Gloriosa poisoning: phase 1 (2–24 hours) brings severe gastroenteritis-like symptoms, dehydration, and low blood pressure. Phase 2 (24–72 hours) can bring altered consciousness, kidney failure, bone-marrow suppression, liver failure, respiratory distress, arrhythmias, and cardiovascular collapse; phase 3 (1–3 weeks) is slow recovery, typically with rebound white-cell counts and alopecia. Management is essentially supportive: there is no specific antidote (APJMT).

What the evidence does not support

No controlled human trials of langali for any condition were found in the sources consulted. The plant's one contribution to modern medicine is the alkaloid itself: colchicine extracted from Gloriosa seed is used pharmaceutically (colchicine is a prescription drug, e.g., for gout): which is a fact about the isolated compound, not a reason to ingest the plant (Indian Journal of Research in Pharmacy and Biotechnology review%2015%20page%20554-557.pdf)).

Conservation status

Gloriosa superba is over-exploited as a commercial source of colchicine, and India is a major exporter of its seeds (Springer review). Its conservation status is contested: regional literature reports local depletion in India: including reported extinction in the wild in the Darjeeling Himalaya, an endangered 'B' listing for Himachal Pradesh, and overcollection of tubers endangering the species in India (Springer review; PROTA)). Meanwhile, the South African National Biodiversity Institute's Red List assessment rates the species globally as Least Concern: "widespread and common in its natural range" with "no significant threats" (PlantZAfrica, SANBI). This article takes no position beyond reporting that disagreement.

Dosage

This article provides no dosage and no preparation instructions. Langali is a documented poison: the margin between traditional use and fatal poisoning is not one a reader can navigate at home, and the classical purification procedures are neither standardized nor clinically validated. Any historical use belonged to trained practitioners working within the agadatantra tradition: not to home preparation.

Safety & contraindications

FAQs

What is langali?

Langali is the Ayurvedic name for Gloriosa superba, the glory lily: a tuberous climbing plant whose every part contains the alkaloid colchicine, most concentrated in the seeds and tubers (APJMT).

Is langali poisonous?

Yes. Ayurvedic toxicology itself classifies it as a poisonous root (moolavisha) and one of the nine semi-poisonous upavisha drugs (IJAPR review). Modern case reports document multi-organ poisoning, bone-marrow failure, and death after ingestion (PubMed case report).

Why do Ayurvedic texts mention a poisonous plant at all?

The tradition held that poisons could be used therapeutically after specialized purification (shodhana) and only by trained physicians: the traditional principle being that a poison, properly purified and correctly dosed, could act as ambrosia (langali review, Int J Herb Med). That is a historical doctrine, not a home-use instruction, and the purification methods are not standardized in the classical Samhitas (IJAPR review).

What does colchicine poisoning feel like?

It begins within hours with severe nausea, vomiting, abdominal pain, and watery diarrhoea; over the next 1–3 days it can progress to kidney failure, bone-marrow suppression, liver failure, breathing difficulty, and heart rhythm disturbances. Survivors typically lose their hair 1–2 weeks later before recovering over several weeks (APJMT; PubMed case report).

Is there an antidote for langali poisoning?

No. Management is supportive care in a hospital, fluids, monitoring, and organ support, and outcomes depend on how much was ingested and how quickly treatment begins (APJMT).

Can langali be made safe by purification at home?

No. Traditional purification procedures are not standardized, are absent from the Samhitas, and have no clinical validation of safety (IJAPR review). Do not attempt it.

Sources

Disclaimer

This article is for educational purposes only and is not medical advice. Langali (Gloriosa superba) is a poison. Do not ingest any part of this plant or attempt to prepare it at home. If you suspect ingestion — by yourself, a child, or anyone else — seek emergency medical care immediately. Herbal products can interact with medications and are not suitable for everyone; talk to a qualified healthcare practitioner before using any herb.