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Key Facts
- Material
- Rhizome
- Botanical source
- Coptis chinensis
- Direct human evidence
- 1 study linked
What Is Huang Lian?
Huang Lian (Coptis chinensis), known in Chinese as 黄连 is the rhizome of Coptis chinensis (Ranunculaceae), a traditional Chinese medicinal material with documented use in classical TCM texts. In the traditional TCM framework, it is classified as cold in nature and bitter in flavor.
Clears Heat, dries Dampness, drains Fire, resolves toxicity. Key herb for Damp-Heat in the Intestines.
Botanical description: Coptis chinensis is a small perennial herb of the Ranunculaceae family, growing 15–25 cm tall. The medicinal part is the dried rhizome, harvested in autumn. The dried rhizome is irregularly shaped, yellowish-brown externally, with characteristically bright yellow cross-sections. The intense yellow colour and extreme bitterness are due to high concentrations of berberine and related isoquinoline alkaloids.
Traditional TCM Context
Traditional functions: Clears Heat, dries Dampness, drains Fire, resolves toxicity. Key herb for Damp-Heat in the Intestines.
Traditional uses: Used for diarrhea, dysentery, abdominal pain with burning sensation, IBS-D with Damp-Heat pattern. Core ingredient in Ban Xia Xie Xin Tang.
Related TCM patterns
This description reflects traditional TCM theory and is not a modern medical diagnosis or treatment claim.
What Research Applies to Huang Lian?
Berberine, the main bioactive compound, demonstrates anti-inflammatory, antimicrobial, and intestinal barrier-protective effects. Systematic review confirms therapeutic potential for inflammatory bowel disease via multiple mechanisms including T-cell regulation and oxidative stress inhibition.
| Research scope | Material studied | What it covers | Key limitation |
|---|---|---|---|
Direct Huang Lian | Coptis chinensis | 1 direct human study | See linked studies below |
Extract / derivative | Standardized extracts, isolated compounds | Bioactivity of concentrated or isolated compounds | Extracts and isolated compounds may not represent the whole herbal material. |
Formula-level | Complete formulas containing Huang Lian | No formula study linked | Formula results cannot be attributed to a single ingredient. |
Preclinical | Animal models, in vitro assays | No preclinical study linked | Animal and in vitro results do not confirm human efficacy. |
Important: Research involving extracts, isolated compounds, or formulas containing Huang Lian may not apply directly to Huang Lian as a whole TCM medicinal material. Different product forms (raw herb, extract, powder, oil) may have distinct chemical profiles.
Directly linked research
- [Review article]Tracking evidences of Coptis chinensis for the treatment of inflammatory bowel disease from pharmacological, pharmacokinetic to clinical studiesJournal of Ethnopharmacology, 2020
Safety Information
Safety Summary
What is known
Contraindicated in Cold-Deficiency patterns. Long-term high-dose use may affect gut microbiome. Monitor in pregnancy.
What remains uncertain
- Herb-specific clinical safety data (adverse events, toxicity, long-term use) are not available for review.
- Drug-herb interaction data specific to Huang Lian may be lacking; most published interaction studies use extracts or isolated compounds.
Who should seek professional guidance
Pregnant or breastfeeding individuals, those taking prescription medications, people managing chronic conditions, and anyone considering herbal products for children should consult a qualified healthcare professional before using Huang Lian or any herbal product.
Platform safety boundary
TCMIO provides educational information only — not medical advice, diagnosis, or treatment recommendations. We do not provide dosage guidance, administration instructions, or individualized treatment plans. Always consult a qualified healthcare professional before using any herbal product.
Safety during pregnancy, lactation, and pediatric use has not been systematically evaluated for Huang Lian as a medicinal material. For urgent or severe symptoms, seek immediate medical attention.
Sources Used on This Page(4)
- 1.
Yang Y, Vong CT, Zeng S, Gao C, Chen Z, Fu C, Wang S, Zou L, Wang A, Wang Y. Tracking evidences of Coptis chinensis for the treatment of inflammatory bowel disease from pharmacological, pharmacokinetic to clinical studies. Journal of Ethnopharmacology. 2020.
Bibliographic details
Reliability: High
Source type: Review Article
- 2.
Bathaei P, Imenshahidi M, Hosseinzadeh H. Effects of Berberis vulgaris, and its active constituent berberine on cytochrome P450: a review. Naunyn-Schmiedeberg's Archives of Pharmacology. 2024.
Bibliographic details
Reliability: Moderate
Source type: Review Article
- 3.
Zhang YT, Yu YQ, Yan XX, Wang WJ, Tian XT, Wang L, Zhu WL, Gong LK, Pan GY. Different structures of berberine and five other protoberberine alkaloids that affect P-glycoprotein-mediated efflux capacity. Acta Pharmacologica Sinica. 2019.
Bibliographic details
Reliability: Moderate
Source type: In Vitro / Molecular Study
- 4.
Chinese Pharmacopoeia Commission. Pharmacopoeia of the People's Republic of China, 2020 Edition, Volume I. Beijing: China Medical Science Press; 2020. Monograph: Coptidis Rhizoma (Huang Lian).
Chinese Pharmacopoeia 2020Bibliographic details
Reliability: gold
Last checked: July 2026
Source type: pharmacopoeia
Medical Disclaimer: The information on TCMIO is provided for educational purposes only. It is not intended as medical advice, diagnosis, or treatment.
Always consult a qualified healthcare professional before using any herbal products, starting any new treatment, or making changes to your existing healthcare regimen. Do not stop or modify any prescribed treatment without consulting your healthcare provider.
If you are experiencing severe or urgent symptoms, seek immediate medical attention by calling emergency services or visiting the nearest emergency department.