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Effect of Coptis
Coptis (also known as Huanglian, Yunlian, Yalian, Chuan Lian, Wei Lian, Ji Lian, Wang Lian, and Zhi Lian) is a traditional Chinese herb with a bitter and cold nature. It primarily affects the heart, liver, stomach, and large intestine meridians. Coptis is widely used for its ability to clear heat, drain fire, resolve dampness, and detoxify the body.
For internal use, the typical dosage ranges from 1.5 to 3 grams, either as a decoction or in pill or powder form. For external applications, it can be applied directly to the affected area, either by dressing, frying, washing, or soaking. However, caution should be exercised when using Coptis in cases of evil stomach conditions, spleen deficiency diarrhea, or five-evil kidney diarrhea.
In terms of preparation and application:
1. For high fever, heat toxicity, and damp-heat syndrome, Coptis is often used raw. When treating liver fire symptoms like red eyes, headaches, or irritability, it is usually stir-fried with wine. For stomach heat-related vomiting, it is commonly combined with ginger. To address liver-stomach disharmony and sore throat, it is often stir-fried with vinegar.
2. When paired with Astragalus and rhubarb, Coptis helps treat internal damp-heat conditions. For hot-humid nausea, it is often combined with Pinellia and bamboo shavings. For diarrhea caused by damp-heat, it may be used with herbs such as Siler, Astragalus, and Pueraria.
3. Coptis is effective for fevers, heartburn, and digestive discomfort. It is frequently combined with Hawthorn and Forsythia to enhance its therapeutic effects.
4. In cases of blood heat leading to bleeding or limping, Coptis can be used alongside Huangqi and Rhubarb.
5. For skin sores and inflammation, it is often used with herbs like red peony and paeonol.
6. For excessive stomach fire, Coptis is commonly combined with Tangerine Peel, Anemarrhena, and other cooling herbs.
7. Externally, Coptis juice can be used to treat eye redness and irritation, while applying it to the mouth helps heal mouth ulcers.
Coptis chinensis is renowned for its strong heat-clearing properties and is particularly effective in treating various inflammatory and infectious conditions. Its main indications include high fever, irritability, delirium, heart fire symptoms like chest tightness and mouth sores, blood stasis with vomiting or bleeding, sore throat due to liver fire, stomach heat causing vomiting, diabetes, swollen gums, and damp-heat-induced diarrhea and abdominal distension. It is also beneficial for skin infections, eczema, and burns.
Historically, the name "Huanglian" comes from the yellow color of its root. Depending on the processing method, Coptis can be prepared as berberine, stir-fried berberine, turmeric-processed berberine, bile-processed berberine, and more. Proper storage involves keeping the processed forms in sealed containers in cool, dry places to maintain their potency and quality.