Hedyotis diffusa

Botanical

What is it

Hedyotis diffusa (also known as Oldenlandia diffusa, snake-needle grass, or bai hua she she cao) is a small flowering herb used in traditional Chinese medicine, particularly in formulations for inflammatory and oncology-supportive contexts.

Evidence for 1 use

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

Cancer-supportive (traditional and laboratory)

Mixed Evidence

Long traditional use in oncology-supportive formulas. Laboratory studies suggest activity; well-controlled human clinical evidence is limited.

How it works

The herb contains iridoids, flavonoids, and triterpenes. Laboratory and animal studies show anti-inflammatory, immunomodulatory, and antitumor activity in various cancer cell lines. In traditional Chinese medicine, it is used in many cancer-supportive formulas, often combined with Scutellaria barbata. Human clinical evidence for cancer is limited to small trials, often combined with conventional therapy.

Dosage

Traditional decoctions use 15-30 g of dried herb daily. Standardized extracts vary by product.

When and how to take it

Traditional preparations are taken between or before meals. Follow practitioner or product guidance.

2 commercial forms

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

Dried herb decoction

Traditional preparation.

Hot water extracts iridoids and flavonoids

Standardized extract

Used in modern TCM products.

Concentrated active compounds

Safety

Generally well-tolerated in traditional doses. Modern controlled safety data are limited. Quality and identification of products can vary.

Who should be cautious

Avoid in pregnancy and breastfeeding. Cancer patients should discuss with their oncology team before use; concurrent use with conventional cancer treatments needs medical guidance.

Interactions

Possible additive effects with chemotherapy and immune-modulating drugs. Discuss with your oncology team if relevant.

Frequently asked questions

Can Hedyotis treat cancer?⌄

It is used in traditional Chinese medicine as part of multi-herb formulas. Modern controlled evidence is limited; do not use as a replacement for conventional cancer treatment.

Is it safe with chemotherapy?⌄

Discuss with your oncology team. Interactions are not well characterized.

References

Hedyotis diffusa on Wikidata — Wikidata link

Hedyotis diffusa on NIH DSLD (US supplement label database) — NIH Dietary Supplement Label Database link

Research on Hedyotis diffusa (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.