Jack-in-the-pulpit

Botanical

What is it

Jack-in-the-pulpit (Arisaema triphyllum), also called Indian turnip, is a North American woodland plant in the arum family. The corm (root) has been used in traditional Native American and folk medicine, but the raw plant is toxic.

Evidence for 1 use

AI-assisted evidence assessment — talk to your doctor before relying on any single supplement.

Traditional respiratory / rheumatic complaints

Mixed Evidence

Historical use is documented but no clinical evidence supports specific therapeutic benefits.

How it works

The fresh corm contains calcium oxalate raphides (needle-like crystals) that cause intense oral and gastric irritation if consumed raw. Traditional preparation involves drying and aging the corm for months to a year, which reduces toxicity. After proper processing, the corm was used historically for respiratory complaints, rheumatism, and topical applications. Little modern pharmacological research has been performed on Arisaema triphyllum. Related Asian Arisaema species are used in traditional Chinese medicine and have shown anti-inflammatory and antineoplastic activities in preclinical studies.

Dosage

There is no established safe supplement dose. Traditional preparations used very small amounts of properly aged dried corm. Raw plant material should never be consumed.

When and how to take it

Not applicable - use is not recommended outside of traditional practitioner contexts.

1 commercial form

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Dried, aged corm

Used in traditional preparations; raw material is toxic.

Traditional preparation required to reduce toxicity

Safety

Raw or improperly prepared jack-in-the-pulpit is highly irritating to mucous membranes and can cause severe oral pain, swelling, breathing difficulty, and gastrointestinal symptoms. Even processed material has limited safety data. Modern use is rare and not generally recommended.

Who should be cautious

Should be avoided in pregnancy and lactation, in children, and by anyone without expert botanical and traditional medicine guidance. Generally not recommended due to safety profile and lack of standardization.

Interactions

Insufficient data on drug interactions.

Frequently asked questions

Is jack-in-the-pulpit safe to eat?⌄

Raw or improperly prepared plant is toxic and causes severe mucous membrane irritation. Even properly prepared material has limited safety data and is not generally recommended for use.

Why is jack-in-the-pulpit in supplements?⌄

It appears in some traditional and homeopathic preparations. If you see it on a supplement label, verify the source and consult a knowledgeable practitioner.

References

Jack-in-the-pulpit on Wikidata — Wikidata link

Jack-in-the-pulpit on NIH DSLD (US supplement label database) — NIH Dietary Supplement Label Database link

Research on Jack-in-the-pulpit (PubMed search) — PubMed link

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Evidence-based·How we grade evidence

Disclaimer: These statements have not been evaluated by the FDA. This page is educational, not a substitute for personalized medical advice. Evidence grades are AI-assisted assessments — talk to your doctor before starting any new supplement, especially if you’re pregnant, breastfeeding, on medications, or managing a chronic condition.