Bai Hua She She Cao
StarHedyotis diffusa Willd.
☯ TCM Properties
Clears Heat and Resolves Toxicity; Promotes Urination and Relieves Stranguria; Clears Damp-Heat; Disperses Swelling and Dissipates Abscesses; Invigorates Blood and Alleviates Pain
Traditional Chinese Uses
Bai Hua She She Cao (hedyotis herb, oldenlandia) is a cold, bitter herb widely used in Chinese medicine to clear Heat toxin, reduce swelling, and promote urination. It is one of the most important herbs for inflammatory and infectious conditions, including appendicitis, snake bites, carbuncles, and sore throat. Modern Chinese medicine also uses it extensively in oncology-adjacent protocols for its anti-inflammatory and immune-modulating properties. It is commonly combined with Ban Zhi Lian for synergistic effect in Heat toxin conditions.
Botanical Description
Hedyotis diffusa (syn. Oldenlandia diffusa), snake-needle grass, is a slender annual herb of the family Rubiaceae native to moist grasslands, ditches, rice-paddy margins and waste ground throughout southern China, Southeast Asia, Japan and Korea. It produces a slender taproot and many prostrate to ascending, quadrangular, glabrous stems 15-50 cm long that branch repeatedly from the base. The opposite, sessile, linear to narrowly lanceolate leaves are 1-3.5 cm long and only 1-3 mm wide, with revolute margins and a single midvein, subtended by small membranous stipules. Tiny solitary or paired axillary flowers about 2 mm long have a four-toothed calyx and a four-lobed white tubular corolla, followed by small flattened-globose capsules 2-3 mm across crowned by the persistent calyx and containing numerous angular seeds. The whole flowering herb with root is harvested in summer.
Active Constituents
Ursolic acid
Pentacyclic triterpenoidConcentration: Major triterpenoid, reported around 4.6-4.8% by HPLC in some samples
A key bioactive triterpenoid; induces apoptosis, cell-cycle arrest and anti-angiogenic effects in cancer cell models and shows anti-inflammatory activity, underpinning the herb's heat-clearing, toxin-resolving reputation.
Oleanolic acid
Pentacyclic triterpenoidConcentration: Reported around 1.9% by HPLC in some samples
An isomer of ursolic acid with hepatoprotective, anti-inflammatory and cytotoxic activity contributing to the herb's antitumor and detoxifying effects.
Asperuloside / iridoid glycosides
Iridoid glycosideConcentration: Iridoids form one of the largest constituent classes (dozens identified)
Iridoids such as asperuloside, scandoside and E-6-O-p-coumaroyl scandoside methyl ester contribute anti-inflammatory and antitumor activity.
2-Hydroxy-3-methylanthraquinone
AnthraquinoneConcentration: Representative of the anthraquinone fraction
Anthraquinones from the herb show pro-apoptotic and antiproliferative activity against tumor cell lines in vitro.
Flavonoids (quercetin and kaempferol glycosides)
FlavonoidConcentration: Numerous flavonoids identified across the aerial parts
Flavonoid glycosides provide antioxidant, anti-inflammatory and immunomodulatory activity.
Polysaccharides
PolysaccharideConcentration: Water-soluble fraction of the whole herb
Reported to stimulate immune cells and contribute to the immunomodulatory component of the herb's antitumor activity.
Dosage
| Form | Amount | Frequency | Duration | Population | Notes |
|---|---|---|---|---|---|
| decoction | 6-15g | Daily | — | — | — |
Preparation Methods
Decoction of the whole herb
Parts: whole aerial plant, root
The dried whole plant is decocted (commonly 15-60 g, larger doses used in some clinical settings) to clear heat, resolve toxicity and drain damp-heat; frequently combined with other heat-clearing herbs.
Fresh herb juice / topical application
Parts: fresh whole plant
The fresh plant may be crushed for juice taken internally, or the pounded fresh herb applied topically to swellings, sores and snakebite in folk practice.
Clinical Studies
Antitumor potential of Hedyotis diffusa Willd: A systematic review of bioactive constituents and underlying molecular mechanisms
This systematic review catalogues the antitumor constituents of Hedyotis diffusa (triterpenoids, flavonoids, iridoids and anthraquinones) and summarises multi-target, multi-pathway mechanisms including inhibition of proliferation and angiogenesis and promotion of apoptosis across several tumor types. Evidence is predominantly in vitro and animal-based.
Historical Texts
Guangxi Zhongyaozhi (Guangxi Records of Chinese Medicinals) and other 20th-century provincial materia medica
Modern (20th century)Quanguo Zhongcaoyao Huibian (National Compendium of Chinese Herbal Medicine)
Modern (1975-1978)References
- Han X, Zhang X, Wang Q, Wang L, Yu S. Antitumor potential of Hedyotis diffusa Willd: A systematic review of bioactive constituents and underlying molecular mechanisms . Biomedicine & Pharmacotherapy (2020) [DOI]
- Chen R, He J, Tong X, Tang L, Liu M. The Hedyotis diffusa Willd. (Rubiaceae): A Review on Phytochemistry, Pharmacology, Quality Control and Pharmacokinetics . Molecules (2016) [DOI]
This information is for educational purposes only and is not intended to replace professional medical advice. Always consult a qualified healthcare provider before using any herbal remedy, especially if you are pregnant, nursing, or taking medications.
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