# Bupleurum chinense

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/bupleurum-chinense
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-04-02
**Evidence Score:** 2 / 10
**Category:** European
**Also Known As:** Bupleuri Radix, Chinese Thoroughwax, Chai Hu, Bupleurum root, Thorowax root, Hare's ear root, Radix Bupleuri, Bei Chai Hu

## Overview

Bupleurum chinense is a traditional Chinese medicinal herb whose primary bioactive compounds, saikosaponins (particularly saikosaponin-a and saikosaponin-d), drive its anti-inflammatory and [hepatoprotective](/ingredients/condition/detox) effects. These triterpenoid saponins modulate immune signaling by inhibiting complement cascade components and suppressing [pro-inflammatory cytokine](/ingredients/condition/inflammation) release.

## Health Benefits

• [Anti-inflammatory](/ingredients/condition/inflammation) effects through inhibition of complement activation pathways (C1s, C3, C4) and cytokine modulation - based on in vitro studies only
• [Hepatoprotective](/ingredients/condition/detox) properties demonstrated by reduction of AST/ALT levels in animal models exposed to hepatotoxins - preliminary evidence only
• Antiviral activity against hepatitis B and other viruses shown in laboratory studies - no human clinical data available
• [Immunomodulatory](/ingredients/condition/immune-support) effects through prostaglandin synthesis modulation - based solely on preclinical research
• Potential gastroprotective effects from polysaccharide components - limited to animal studies

## Mechanism of Action

Saikosaponin-a and saikosaponin-d inhibit the classical complement pathway by suppressing C1s activation and reducing C3 and C4 protein levels, thereby dampening downstream [inflammatory](/ingredients/condition/inflammation) cascades. These compounds also suppress NF-κB nuclear translocation, reducing transcription of TNF-α, IL-6, and IL-1β. Additionally, saikosaponins appear to modulate glucocorticoid receptor sensitivity, potentiating [cortisol](/ingredients/condition/stress) signaling and contributing to immunosuppressive effects.

## Clinical Summary

Evidence for Bupleurum chinense is predominantly derived from in vitro cell studies and rodent models; robust human clinical trial data remain sparse. Animal studies using carbon tetrachloride-induced hepatotoxicity models have demonstrated statistically significant reductions in serum AST and ALT levels following saikosaponin administration, suggesting [hepatoprotective](/ingredients/condition/detox) potential. The European Medicines Agency (EMA) has evaluated Bupleurum root under its monograph framework, acknowledging traditional use for relief of fatigue and stress-related symptoms but noting insufficient clinical evidence to establish well-established medicinal use. No large-scale randomized controlled trials in humans have confirmed efficacy for any indication, meaning all purported benefits carry a preliminary or traditional-use evidence classification.

## Nutritional Profile

Bupleurum chinense (Chinese thoroughwax root) is a medicinal herb rather than a food ingredient, so conventional macronutrient profiling is not its primary characterization. Dried root contains approximately 60-70% carbohydrates (predominantly polysaccharides including bupleuran 2IIb and 2IIc at roughly 3-8% of dry weight), 8-12% crude fiber, 5-8% protein (limited amino acid data available), and 2-5% lipids. Key bioactive compounds are the primary focus: Saikosaponins (triterpene glycosides) are the principal active constituents, present at 0.3-2.5% of dry root weight, with saikosaponin-a, saikosaponin-b2, saikosaponin-c, and saikosaponin-d as the dominant forms; saikosaponin-d is considered most pharmacologically potent. Polysaccharides (bupleurans) occur at 3-8% dry weight and are associated with [immunomodulatory](/ingredients/condition/immune-support) effects. Flavonoids including rutin, isorhamnetin, and narcissin are present at approximately 0.1-0.5% dry weight. Volatile oils constitute roughly 0.1-0.3%, containing compounds such as 2-methyl cyclopentanone and caprylic acid. Polyacetylenes (including bupleurumol) are present at trace levels (<0.1%). Phenylpropanoids including chlorogenic acid are detected at approximately 0.05-0.2%. Sterols (alpha-spinasterol, stigmasterol) occur at roughly 0.1-0.3% dry weight. Mineral content includes calcium (~800-1200 mg/100g dry), potassium (~1500-2000 mg/100g dry), iron (~15-25 mg/100g dry), and magnesium (~200-400 mg/100g dry), though bioavailability from dried root preparations is low due to matrix binding. Bioavailability of saikosaponins is significantly enhanced by hot water decoction (traditional preparation) compared to raw consumption; saikosaponins undergo hepatic hydrolysis to prosaikogenins, which are considered active metabolites. Standardized extracts are typically normalized to saikosaponin content (minimum 0.3% per pharmacopeial standards in some Asian regulatory frameworks). Note: This ingredient is used in gram-level therapeutic doses (3-9g dried root per day in traditional contexts), not as a conventional food source, so nutritional contribution to diet is negligible.

## Dosage & Preparation

No clinically studied dosage ranges for human use are available. Preclinical studies used concentrations of 100 µg/ml for extracts or 1 mg/ear for saponins in animal models, but human dosing has not been established. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Bupleurum chinense has been associated with hepatotoxicity in rare case reports, paradoxically contradicting its traditional [hepatoprotective](/ingredients/condition/detox) reputation, particularly when used in high doses or prolonged regimens. Common adverse effects include gastrointestinal upset, nausea, and increased bowel movements. It may potentiate immunosuppressive drugs and interfere with corticosteroid [metabolism](/ingredients/condition/weight-management) due to glucocorticoid receptor modulation, warranting caution in patients on prednisone or cyclosporine. Bupleurum is not recommended during pregnancy or breastfeeding due to insufficient safety data, and individuals with pre-existing liver disease should use it only under medical supervision.

## Scientific Research

No human clinical trials, randomized controlled trials, or meta-analyses for Bupleurum chinense were identified in the research dossier. All available evidence comes from in vitro and animal studies examining saikosaponin mixtures and extracts, with no PMIDs provided for any human studies.

## Historical & Cultural Context

Bupleurum chinense roots have been used in Asian traditional medicine for centuries, particularly in Chinese medicine, to treat common cold, [inflammatory](/ingredients/condition/inflammation) disorders, hepatitis, cancer, and fever. The plant is officially recognized in Chinese, Japanese, Korean Pharmacopoeias and WHO monographs on medicinal plants.

## Synergistic Combinations

Milk thistle, Schisandra chinensis, Turmeric, Astragalus, Licorice root

## Frequently Asked Questions

### What are the active compounds in Bupleurum chinense?

The primary bioactive compounds are triterpenoid saponins called saikosaponins, with saikosaponin-a, saikosaponin-b, saikosaponin-c, and saikosaponin-d being the most studied. Saikosaponin-a and saikosaponin-d are considered most pharmacologically active, responsible for anti-inflammatory, immunomodulatory, and hepatoprotective effects observed in laboratory and animal research.

### Can Bupleurum chinense damage the liver?

Despite its traditional use as a liver-protective herb, Bupleurum chinense has been implicated in rare cases of drug-induced liver injury (DILI), particularly in combination herbal formulas used in East Asian medicine. High doses or prolonged use appear to carry the greatest risk, and individuals with existing liver conditions should consult a physician before use.

### What is the typical dosage of Bupleurum chinense root?

Traditional dosing of dried Bupleurum root (Radix Bupleuri) in Chinese medicine typically ranges from 3 to 9 grams per day in decoction form. Standardized extracts vary by saikosaponin content, but no universally validated clinical dosage has been established in human trials; the EMA monograph references traditional preparation methods without specifying a confirmed therapeutic dose.

### Does Bupleurum chinense interact with any medications?

Bupleurum chinense may interact with corticosteroids such as prednisone by modulating glucocorticoid receptor activity, potentially altering steroid efficacy or metabolism. It may also interact with immunosuppressants like cyclosporine and hepatically metabolized drugs processed via CYP450 enzymes. Patients on anticoagulants, antiepileptics, or hepatotoxic medications should exercise particular caution and disclose use to their healthcare provider.

### Is Bupleurum chinense the same as Bei Chai Hu?

Yes, Bupleurum chinense is the botanical source of the traditional Chinese medicine herb commonly called Bei Chai Hu (Northern Chai Hu). It is distinct from Bupleurum scorzonerifolium, known as Nan Chai Hu (Southern Chai Hu), though both species are used medicinally and contain saikosaponins. The EMA monograph specifically addresses the dried root of Bupleurum chinense DC. and Bupleurum scorzonerifolium Willd. as interchangeable official sources.

### Is Bupleurum chinense safe during pregnancy and breastfeeding?

Bupleurum chinense is traditionally used in Chinese medicine and should be avoided during pregnancy due to insufficient safety data in pregnant populations. Breastfeeding women should also consult a healthcare provider before use, as the transfer of saikosaponins and other compounds into breast milk has not been adequately studied.

### What does current clinical evidence show about Bupleurum chinense's effectiveness?

Most evidence for Bupleurum chinense comes from in vitro and animal studies demonstrating anti-inflammatory and hepatoprotective effects, but human clinical trials remain limited. The antiviral claims against hepatitis B are supported only by laboratory research and have not been validated in controlled human studies, so clinical efficacy remains preliminary.

### Is Bupleurum chinense safe for children and elderly populations?

Safety data specific to children and elderly populations is lacking, and Bupleurum chinense should only be used in these groups under professional medical supervision. The risk of hepatotoxicity reported in some cases makes it particularly important to establish safe dosing protocols for vulnerable populations before use.

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