Coptis chinensis, the Chinese goldthread, is a species of goldthread flowering plant native to China.
The rhizomes of Coptis chinensis contain the isoquinoline alkaloids berberine, palmatine, and coptisine among others.
Coptis chinensis is one of the 50 fundamental herbs used in traditional Chinese medicine, where it is called duÃÂn è huánglián (). It has been proved to have antiâÂÂcancer, antiâÂÂinflammatory, and antiâÂÂbacterial properties and to help to improve cardiovascular conditions.
Because of the strong coloring quality of berberine, it has been traditionally used as a dye, especially for wool and other fibers.