# Oldenlandia (Oldenlandia diffusa)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/oldenlandia
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-29
**Evidence Score:** 2 / 10
**Category:** Traditional Chinese Medicine
**Also Known As:** Hedyotis diffusa, Bai Hua She She Cao, Snake Needle Grass, Spreading Hedyotis, White Flower Snake Tongue Grass, Oldenlandia, She She Cao

## Overview

Oldenlandia diffusa, also called Bai Hua She She Cao in Traditional Chinese Medicine, contains bioactive compounds including ursolic acid, oleanolic acid, and flavonoids that drive its anticancer properties. These compounds inhibit tumor cell proliferation primarily by inducing apoptosis and modulating estrogen receptor alpha (ERα) signaling pathways.

## Health Benefits

• May reduce tumor size and number in hepatocellular carcinoma based on animal studies.[1][2]
• Exhibits antiproliferative and apoptotic effects on cancer cells in vitro.[1][6]
• Demonstrates selective inhibition of ERα-positive breast cancer cell growth without affecting normal cells in vitro.[6]
• Reduces inflammation by inhibiting the MAPK pathway in preclinical models.[4]
• Contains [anti-inflammatory](/ingredients/condition/inflammation) compounds, potentially beneficial for osteoarthritis.[4]

## Mechanism of Action

Ursolic acid and oleanolic acid in Oldenlandia diffusa activate intrinsic apoptotic pathways by upregulating pro-apoptotic proteins such as Bax and downregulating anti-apoptotic Bcl-2, leading to caspase-3 activation in cancer cells. The herb selectively inhibits estrogen receptor alpha (ERα) signaling, suppressing proliferation in ERα-positive breast cancer cells while sparing normal breast epithelial cells. Polysaccharide fractions have also been shown to modulate [immune function](/ingredients/condition/immune-support) by enhancing macrophage activity and natural killer cell cytotoxicity, potentially contributing to antitumor effects in vivo.

## Clinical Summary

Preclinical animal studies demonstrate that Oldenlandia diffusa extracts significantly reduce hepatocellular carcinoma tumor size and number in rodent models, though exact quantified reductions vary by extract preparation and dosage. In vitro studies consistently show antiproliferative and apoptotic effects across multiple cancer cell lines including liver, breast, and colorectal cancer cells. Human clinical trial data is largely absent or limited to small, poorly controlled studies, meaning the current evidence base is primarily preclinical. The overall evidence is promising but insufficient to support clinical recommendations without rigorous randomized controlled trials.

## Nutritional Profile

Oldenlandia diffusa (Baihuasheshecao) is a medicinal herb with limited conventional nutritional profiling, but its bioactive constituents are well-documented. Key bioactive compounds include: iridoid glycosides (asperuloside, deacetylasperuloside, scandoside) at approximately 0.5–2% dry weight, which are primary active constituents; anthraquinones (2-hydroxy-3-methylanthraquinone, 2-methyl-3-hydroxyanthraquinone) at trace to low concentrations (~0.1–0.5% dry weight); flavonoids including quercetin, kaempferol, and luteolin glycosides collectively estimated at 0.3–1.5% dry weight; polysaccharides (β-glucans and heteropolysaccharides) comprising approximately 5–15% dry weight, contributing to [immunomodulatory](/ingredients/condition/immune-support) effects; phenolic acids including p-coumaric acid, caffeic acid, and chlorogenic acid at low concentrations (~0.1–0.8% dry weight); sterols including β-sitosterol and stigmasterol at trace levels; and ursolic acid and oleanolic acid (triterpenoids) at approximately 0.1–0.5% dry weight. Macronutrient content is not clinically characterized as a food source; it is consumed as a decoction or extract, not as a dietary staple. Mineral content includes trace potassium, calcium, and magnesium typical of leafy herbs. Bioavailability notes: iridoid glycosides are hydrolyzed in the gut to active aglycones; polysaccharide absorption is limited but exerts local gut immunomodulatory effects; flavonoids undergo hepatic first-pass [metabolism](/ingredients/condition/weight-management) with moderate bioavailability (10–30% estimated). Water-based decoctions (traditional preparation) primarily extract polysaccharides, iridoids, and polar flavonoids, while ethanolic extracts yield higher anthraquinone and terpenoid content.

## Dosage & Preparation

Preclinical data suggest oral doses of 100-200 mg/kg twice daily in rats. No standardized human dosages are available. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Oldenlandia diffusa is generally considered safe at traditional culinary and herbal doses, but systematic human safety data is lacking. Because of its potential estrogenic-modulating activity via ERα inhibition, individuals with hormone-sensitive conditions or those taking selective estrogen receptor modulators (SERMs) such as tamoxifen should exercise caution and consult a healthcare provider. Concurrent use with anticoagulant or immunosuppressant medications may carry theoretical interaction risks given its immune-modulating properties, though direct interaction studies in humans are not available. Pregnant and breastfeeding women should avoid use due to insufficient safety data.

## Scientific Research

There are no human clinical trials or meta-analyses; all evidence is from preclinical in vitro and in vivo studies. Key studies include a rat model of hepatocellular carcinoma showing tumor reduction and improved survival with Oldenlandia diffusa treatment.[1][2]

## Historical & Cultural Context

Oldenlandia diffusa has been used for centuries in Traditional Chinese Medicine to treat cancer, arthritis, and [inflammatory](/ingredients/condition/inflammation) conditions. It is traditionally prepared as a decoction for detoxification and tumor treatment.

## Synergistic Combinations

Curcumin, Boswellia, Green Tea Extract, Resveratrol, Quercetin

## Frequently Asked Questions

### What is Oldenlandia diffusa used for in Traditional Chinese Medicine?

In Traditional Chinese Medicine, Oldenlandia diffusa (Bai Hua She She Cao) has been used for centuries primarily as an anti-inflammatory and detoxifying herb, and is most commonly prescribed for conditions classified as 'heat toxins,' including infections and tumors. It is a core ingredient in several classic TCM formulas targeting liver, lung, and gastrointestinal cancers and is often combined with other herbs like Scutellaria barbata to enhance anticancer effects.

### What are the active compounds in Oldenlandia diffusa?

The primary bioactive compounds identified in Oldenlandia diffusa include ursolic acid, oleanolic acid, stigmasterol, flavonoids such as luteolin and quercetin, and high-molecular-weight polysaccharides. Ursolic acid is considered one of the most pharmacologically significant compounds, demonstrating potent apoptosis-inducing and anti-inflammatory activity in multiple preclinical models.

### Does Oldenlandia diffusa kill cancer cells?

In laboratory (in vitro) and animal studies, Oldenlandia diffusa extracts have demonstrated the ability to induce apoptosis and inhibit proliferation in hepatocellular carcinoma, breast cancer, and colorectal cancer cell lines, largely through Bcl-2/Bax pathway modulation and caspase-3 activation. However, no well-designed human clinical trials have confirmed these effects in cancer patients, so it should not be considered a cancer treatment outside of supervised clinical investigation.

### Can Oldenlandia diffusa interact with cancer medications?

Oldenlandia diffusa may theoretically interact with tamoxifen and other selective estrogen receptor modulators (SERMs) due to its ERα-inhibiting activity, potentially altering their efficacy or side effect profiles. Its immune-modulating polysaccharides could also interfere with immunosuppressive drugs used during cancer treatment such as cyclosporine. Patients undergoing chemotherapy or hormone therapy should always disclose herbal supplement use to their oncologist before starting Oldenlandia diffusa.

### What is the typical dosage of Oldenlandia diffusa?

Traditional TCM protocols typically use 15–60 grams of dried Oldenlandia diffusa herb per day as a decoction (water extract), often in combination formulas. Standardized extract supplements vary widely in concentration and lack universal dosing guidelines, as no established human clinical dose-finding trials exist. Given the absence of standardized dosing data, use should be guided by a qualified TCM practitioner or integrative medicine physician.

### Is Oldenlandia diffusa safe to use alongside chemotherapy or immunotherapy?

While Oldenlandia diffusa shows anti-cancer properties in laboratory studies, using it concurrently with chemotherapy or immunotherapy requires medical supervision due to potential interactions with cancer treatment efficacy and metabolism. Some in vitro research suggests it may enhance certain cancer cell death pathways, but clinical evidence in humans undergoing active cancer treatment is lacking. Always consult an oncologist before combining Oldenlandia diffusa with prescribed cancer therapies to avoid unintended interference.

### How does Oldenlandia diffusa compare to other traditional herbs used for immune and inflammatory support?

Unlike some immune-stimulating herbs, Oldenlandia diffusa primarily works by inhibiting inflammatory pathways (particularly MAPK signaling) rather than directly boosting immune cell production. This makes it potentially better suited for chronic inflammatory conditions rather than acute immune challenges. Compared to herbs like astragalus or reishi, Oldenlandia diffusa has a more specific anti-inflammatory mechanism but less extensive clinical research in human populations.

### What is the quality and consistency of Oldenlandia diffusa supplements, and how do different extract forms compare?

Oldenlandia diffusa supplements vary widely in quality due to inconsistent harvesting, processing, and standardization practices across suppliers. Standardized extracts (typically concentrated for active polysaccharides and flavonoids) generally provide more consistent dosing compared to whole-herb powders, though direct comparative research on absorption and efficacy between forms is limited. Third-party testing and supplier verification are recommended, as the ingredient's complex polysaccharide composition makes quality control challenging.

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*Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com*
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