Jerusalem Artichoke

Botanical

What is it

Jerusalem artichoke (Helianthus tuberosus, also called sunchoke) is a North American sunflower species cultivated for its edible tubers. The tubers are an exceptional source of inulin, a soluble prebiotic fiber.

Evidence for 2 uses

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

Gut microbiome / prebiotic effect

Strong Evidence

Strong evidence that inulin from Jerusalem artichoke selectively promotes growth of beneficial gut bacteria (especially Bifidobacterium) and increases short-chain fatty acid production.

Bowel regularity

Good Evidence

Inulin supplementation modestly improves stool frequency and consistency in constipation, supported by multiple trials.

How it works

Jerusalem artichoke tubers contain very high levels of inulin and other fructans. These pass undigested to the colon, where they are fermented by beneficial gut bacteria (particularly Bifidobacterium) into short-chain fatty acids. This supports gut microbial balance, may improve bowel function, and modestly affects glucose and lipid metabolism. Inulin-rich tubers are the source of much commercial inulin used in supplements and functional foods.

Dosage

Inulin from Jerusalem artichoke is typically dosed at 3-10 g per day. Higher doses (15+ g) may cause GI symptoms.

When and how to take it

WHEN: Anytime. HOW: Start with small amounts to assess tolerance; gradually increase. Take with water and food.

2 commercial forms

Compare the main delivery options and what they’re best suited for.

Jerusalem artichoke inulin extract

Most common commercial form; used in fiber and prebiotic supplements.

Not absorbed; fermented by colonic bacteria.

Cooked or raw, providing inulin and additional nutrients.

Whole-food source with full fiber complement.

Safety

Generally well tolerated at moderate doses. High doses cause gas, bloating, and laxative effects. People with IBS or FODMAP sensitivity may be especially affected. Rare allergic reactions in sunflower-allergic individuals.

Who should be cautious

People with IBS, IBD, or FODMAP sensitivity may experience symptoms. Sunflower family allergies are possible (rare). Diabetics should track effects on glycemic response.

Interactions

No significant pharmaceutical interactions reported.

Food sources

Jerusalem artichoke (tuber)

Amount
1/2 cup raw (75 g)
%DV
—

Frequently asked questions

Why does Jerusalem artichoke cause gas?⌄

Inulin is fermented by colon bacteria, producing gas as a byproduct. This is normal but can be uncomfortable. Building tolerance gradually helps.

Are Jerusalem artichokes related to artichokes?⌄

No. Despite the name, Jerusalem artichoke is a sunflower, not a thistle artichoke (Cynara scolymus). The two are unrelated.

References

Jerusalem Artichoke on Wikidata — Wikidata link

Jerusalem Artichoke on NIH DSLD (US supplement label database) — NIH Dietary Supplement Label Database link

Research on Jerusalem Artichoke (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.