Dipsacus asperloids

Botanical

What is it

Dipsacus asperoides ("asperloids" is a typo), known as Xu Duan in Chinese herbal medicine, is a teasel species whose root is used traditionally for joint, bone, and lower back complaints, and for threatened miscarriage.

Evidence for 1 use

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Bone and joint support

Mixed Evidence

Animal studies and some Chinese-language trials suggest possible benefits for osteoporosis and bone healing; high-quality English-language trials are limited.

How it works

The root contains iridoid glycosides (loganin, sweroside), triterpene saponins, and alkaloids. Preclinical work suggests bone-protective effects, modulation of osteoclast and osteoblast activity, and neuroprotective and anti-inflammatory actions. Human clinical data are limited and mostly within multi-herb traditional formulas. Some Chinese-language studies suggest benefits for osteoporosis and bone healing.

Dosage

Traditional decoctions use 6-15 g of dried root daily. The DSLD does not list a single standardized dose. No RDA or upper limit exists.

When and how to take it

Traditionally taken in decoctions twice daily; no specific modern timing has been established.

1 commercial form

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Root extract

Used in traditional Chinese formulas for the lumbar region and bones.

Iridoid markers vary by product

Safety

Generally well tolerated in traditional short-term use. Mild GI upset may occur. Concentrated extracts have not been formally evaluated for long-term safety in humans.

Who should be cautious

Although traditionally used in pregnancy, modern advice is to use only under qualified practitioner supervision. Avoid in breastfeeding and in children without medical guidance.

Interactions

Theoretical interactions with anticoagulants and bone-modifying medications (bisphosphonates, denosumab). Specific clinical data are limited.

Frequently asked questions

Is it safe in pregnancy?⌄

Traditional use includes use in early pregnancy under practitioner supervision, but modern self-supplementation in pregnancy is not advised.

Does Xu Duan really help bones?⌄

Preclinical evidence is supportive, but rigorous human clinical trials are limited.

References

Dipsacus asperloids on NIH DSLD (US supplement label database) — NIH Dietary Supplement Label Database link

Research on Dipsacus asperloids (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.