Eden Apothecary · Herb Profile
Coptis chinensis
Also known as Coptis, Huang Lian
Pronounced Coptis: KOP-tiss. Coptis chinensis: KOP-tiss chih-NEN-sis. Huang Lian: hwahng lee-EN.
Cold and drying: the bitterest, most berberine-dense rhizome in the pharmacy, draining damp-heat from the gut, quenching Heart and Stomach fire, and disinfecting hot, toxic, suppurating tissue.
Avoid. Coptis (Rhizoma Coptidis) is one of the richest berberine sources in the materia medica (roughly 5 to 10 percent berberine), and berberine crosses the placenta and displaces bilirubin from serum albumin; in the fetus and newborn this raises the risk of jaundice and kernicterus (bilirubin brain injury). The hazard was serious enough that Rhizoma Coptidis and berberine were banned in Singapore from 1978, a prohibition prompted by neonatal jaundice in G6PD-deficient infants and not lifted until 2016. Berberine is also reported to stimulate uterine contraction. Modern references (AHPA Botanical Safety Handbook, 2nd ed., which classes berberine-containing herbs as not for use in pregnancy; Mills and Bone, Principles and Practice of Phytotherapy; Chen and Chen, Chinese Medical Herbology and Pharmacology; Bensky, Clavey and Stoger, Materia Medica; Brinker, Herbal Contraindications and Drug Interactions) advise against use in pregnancy. There is no safe dose that justifies the fetal risk.
Avoid. Berberine passes into breast milk, and the nursing newborn, whose blood-brain barrier and bilirubin conjugation are immature, can suffer displaced bilirubin, jaundice, and kernicterus, a risk that is greatest in infants with G6PD deficiency. Chen and Chen, Bensky, Clavey and Stoger, and the AHPA Botanical Safety Handbook advise against maternal use of berberine-containing herbs while breastfeeding a newborn. Prefer better-studied, non-alkaloidal alternatives during lactation.
Not for newborns or infants; for older children only under professional supervision. Berberine is specifically hazardous to neonates and jaundiced infants because it displaces bilirubin and can cause kernicterus, and it can trigger hemolysis in children with G6PD deficiency; historically, Coptis given to newborns was tied to neonatal jaundice, the basis of the Singapore ban. In older children the intense bitter-cold readily chills digestion and causes loose stools. Reserve any pediatric use to a qualified practitioner at low, short-course, damp-heat-specific doses.
The most intensely bitter and one of the coldest herbs in the materia medica. Even short courses can chill and slow digestion, and prolonged or high-dose use damages the Spleen and Stomach, causing poor appetite, loose stools, and cold in the belly, so it is best paired with warming, digestive-protective herbs or reserved for genuine damp-heat and fire. The berberine-type alkaloids can provoke gastrointestinal upset. In anyone with glucose-6-phosphate dehydrogenase (G6PD) deficiency, berberine can precipitate hemolysis and must be avoided, and it must not be given to newborns because of the risk of kernicterus. Berberine also carries meaningful drug-interaction potential (see Drug Interactions).
Pregnancy and lactation (berberine risk; see safety fields). Neonates and infants, especially with jaundice or G6PD deficiency (kernicterus and hemolysis risk). Spleen and Stomach deficiency-cold and yang deficiency (TCM). Known G6PD deficiency. Concurrent cyclosporine, tacrolimus, and other narrow-therapeutic-index CYP3A4 or P-glycoprotein substrates without professional supervision.
Harvest pressure is a real concern. The assigned Coptis chinensis is a slow-growing mountain perennial whose rhizome takes about five to six years to mature and whose wild populations in China have been all but depleted by overharvest, so that more than ninety percent of the market supply now comes from cultivation in Sichuan, Chongqing, and Hubei; prefer cultivated, traceable rhizome. Its relatives Coptis teeta (endangered in the eastern Himalaya) and the North American goldthread Coptis trifolia are of greater wild-conservation concern; goldthread (Coptis spp.) appears on the United Plant Savers 'To-Watch' list for North American medicinal plants. Confirm the species and prefer cultivated stock.
Not in canonical biblical texts, and unknown to the ancient Mediterranean world; native to the mountains of central and southern China (Sichuan, Chongqing, Hubei, Shaanxi). Its documented tradition is Chinese: it entered the materia medica in the Han-era Shen Nong Ben Cao Jing as Huang Lian and was carried through every later Chinese and Japanese (Kampo, as Oren) pharmacopoeia. It should not be confused with the North American goldthread (Coptis trifolia / Coptis groenlandica), a related Ranunculaceae rhizome used by Native American and Eclectic practitioners as a bitter mouth-sore wash.
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