Burdock

botanical

What is it

Burdock (Arctium lappa) is a large biennial plant native to Eurasia whose roots, leaves, and seeds have been used in traditional Western, Chinese, and Japanese medicine and cuisine. The root, called gobo in Japan, is a vegetable. In herbalism, burdock is used as a blood purifier, digestive tonic, and skin support.

How it works

Burdock root contains inulin (a prebiotic fiber), polyphenols, flavonoids, lignans (notably arctigenin and arctiin), polyacetylenes, and minerals. Inulin supports growth of beneficial gut bacteria and may modestly improve glucose and lipid metabolism. Lignans have antioxidant and anti-inflammatory effects in laboratory studies. Proposed mechanisms for traditional uses include anti-inflammatory and antioxidant activity, hepatoprotective effects (possibly related to lignan content), antibacterial activity (some compounds inhibit microbial growth), and diuretic effects. Burdock is also reputed to support detoxification, though specific mechanisms underlying 'blood purification' claims are not well characterized in modern terms. Clinical evidence for burdock's traditional uses is limited. Most research is preclinical or based on traditional use rather than controlled clinical trials. Some preliminary research has explored burdock's effects on skin conditions, inflammatory markers, and metabolic outcomes.

Evidence for 5 uses

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

Antioxidant and anti-inflammatory support

Grade C

Moderate evidence

Laboratory studies show antioxidant and anti-inflammatory effects. Translation to specific clinical outcomes is limited.

Digestive support and prebiotic effects

Grade C

Moderate evidence

Inulin content supports growth of beneficial gut bacteria. Burdock as a food contributes to dietary fiber intake.

Skin conditions (eczema, acne)

Grade D

Mixed evidence

Traditional use as 'blood purifier' for skin conditions has limited modern clinical trial support. Preliminary evidence suggests possible benefit from anti-inflammatory and antioxidant effects.

Diabetes and blood sugar support

Grade D

Mixed evidence

Inulin content and lignans may modestly affect glucose metabolism. Clinical evidence in humans is limited.

Liver support

Grade D

Mixed evidence

Traditional use for liver support has limited modern clinical evidence, though lignans show some hepatoprotective activity in laboratory studies.

4 commercial forms

Dried root (decoction/tea)

Aqueous extraction of dried root

Traditional preparation. Used as tea or in herbal blends.

Liquid extract / tincture

Alcohol-based extraction

Concentrated form used in herbalist preparations.

Root powder capsules

Whole-root in capsule form

Common supplement form.

Fresh root (gobo, vegetable)

Whole-food form

Used in Japanese, Korean, and other East Asian cuisines as a vegetable.

Dosage

There is no established RDA. Traditional dried root preparations use 2 to 6 grams per day as decoction or 1 to 2 mL of liquid extract three times daily. Capsule supplements commonly contain 500 to 1,500 mg of root powder per dose. As a vegetable (gobo), burdock root is consumed in much larger amounts as a food.

When and how to take it

Burdock can be taken with or without food. Doses are typically divided two or three times daily. For most traditional applications, daily use over weeks is typical. Burdock as a vegetable can be incorporated into meals without specific timing concerns. Separate from oral medications by at least 2 hours if using high-fiber supplement doses.

Food sources

Food	Amount	%DV
Burdock root (gobo)	Cooked, used in stir-fries and soups	—
Burdock tea	1-2 teaspoons dried root per cup	—

Safety

Burdock is generally well tolerated at typical doses and is safely consumed as a food. Side effects can include mild gastrointestinal upset and occasional allergic reactions (more likely in people allergic to other Asteraceae family plants like ragweed and chrysanthemum). There is no established Tolerable Upper Intake Level. Some commercial herbal teas have been contaminated with belladonna (deadly nightshade), so choose products from reputable manufacturers.

Who should be cautious

Avoid in pregnancy due to possible uterine effects. Use caution in breastfeeding due to insufficient safety data. People with allergies to other Asteraceae plants (ragweed, chrysanthemum, daisies) may have cross-reactivity. People with diabetes should monitor blood glucose. Discontinue before scheduled surgery. Choose reputable products due to historical contamination concerns.

Interactions

Burdock may potentiate effects of diabetes medications due to mild hypoglycemic effects. Possible interactions with diuretics (additive effects). May affect blood-thinning medications due to vitamin K content and possible mild anticoagulant effects. Inulin content may affect absorption of some oral medications taken simultaneously.

Frequently asked questions

Is burdock root the same as gobo?⌄

Yes. Gobo is the Japanese name for burdock root, which is widely used as a vegetable in Japanese, Korean, and Taiwanese cuisines.

Can burdock really clear up acne?⌄

Traditional use as a 'blood purifier' for skin conditions has limited modern clinical evidence. Some users report improvement, possibly through anti-inflammatory effects, but burdock is not a substitute for evaluated dermatologic care for moderate to severe acne.

Is burdock safe to eat regularly?⌄

Yes. Burdock has been eaten as a food in East Asia for centuries with no significant safety concerns. Choose reputable products for medicinal preparations due to historical contamination concerns in some commercial herbal teas.

Does burdock interact with diabetes medications?⌄

Possibly. Burdock may have mild blood-glucose-lowering effects. Monitor blood glucose if you take insulin or oral diabetes medications and use burdock supplements regularly.

Can I be allergic to burdock?⌄

Yes, especially if you are allergic to other Asteraceae plants like ragweed, chrysanthemum, or daisies. Cross-reactivity is possible.

References

Wikidata: Arctium lappa — Wikidata link

Track Burdock with Pilora

Set up dose reminders, check interactions, and join the community in the Pilora iPhone app.

Coming to App Store

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.