Coptis
One of the 'bitterest' herbs, a powerhouse for clearing heat and drying dampness.
Also known as: Coptis chinensis • Huang Lian • Goldthread
Overview
Coptis, or Huang Lian, is one of the most important heat-clearing and toxin-resolving herbs in TCM. Its intense bitterness comes from high concentrations of alkaloids, most notably berberine. It is used to treat conditions of intense heat and damp-heat, such as dysentery, high fever with irritability, boils, and sores. It has a strong downward-draining action, focusing on the Stomach, Intestines, and Heart.
Key Benefits
Gastrointestinal Infections
Its primary use is for damp-heat dysentery or diarrhea with foul-smelling stools, a burning sensation, and fever. Its active ingredient, berberine, is a potent antimicrobial.
Clears Heart Fire
Used for extreme irritability, delirium, insomnia, and anxiety caused by excessive fire in the Heart channel.
Topical Applications
Used as a powder or wash for red, swollen, and painful sores, boils, and eye infections due to its strong anti-inflammatory and antimicrobial properties.
Stops Bleeding
When charred, it can be used to stop bleeding caused by reckless movement of hot blood, such as vomiting blood or nosebleeds.
Dosage & How to Take
This is a very strong herb used in small doses, typically 1.5-6 grams per day in a decoction. It is rarely used alone.
| Purpose | Dose | Notes |
|---|---|---|
| Dysentery/Diarrhea | 3-6g per day | Often combined with Scutellaria (Huang Qin) and Phellodendron (Huang Bai). |
| Insomnia/Irritability | 1.5-3g per day | Used in formulas like Huang Lian E Jiao Tang. |
Best Time to Take
Taken as needed for acute conditions, usually for no more than 1-2 weeks.
With or Without Food
Best taken between meals.
Forms & Bioavailability
| Form | Absorption | Best For | Notes |
|---|---|---|---|
| Dried Rhizome | Good | Decoctions | The raw form is standard. It can be fried with ginger juice to reduce its bitterness and protect the stomach. |
| Extract (Berberine) | Moderate | Blood sugar control, antimicrobial use | Berberine is often extracted and sold as a separate supplement. |
Side Effects & Safety
Common
- Its extreme bitterness can cause nausea and vomiting. It is very cold and can damage the Spleen and Stomach Qi if used long-term or in high doses.
Rare
- None reported when used correctly.
Contraindications
- Strongly contraindicated in any condition due to cold, especially Spleen or Stomach deficiency cold. Avoid in pregnancy. Not for long-term use.
Interactions
Berberine has a similar effect on blood sugar; combining them could lead to hypoglycemia.
Scientific Research
Pharmacology of berberine and its role in the treatment of gastrointestinal diseases
Berberine, the main alkaloid in Coptis, exerts powerful antimicrobial, anti-inflammatory, and gut-modulating effects, making it effective for infectious diarrhea, IBD, and metabolic syndrome.
Food Sources
Frequently Asked Questions
Medical Disclaimer
This content is for educational and informational purposes only and is not intended as medical advice. Always consult with a qualified healthcare professional before starting any supplement regimen, especially if you have pre-existing health conditions or are taking medications. The statements on this page have not been evaluated by the Food and Drug Administration.