Homeopathic cinchona or quinine bark is made from bark of the Peruvian cinchona tree, and has long been used for malaria. It was taken from South America to Europe by Jesuits in the seventeenth century. Homeopathic cinchona is also often called china. Cinchona, or quinine bark, is native to South American rainforests like the Amazon. It will grow 15 to 20 meters tall, and produce white, yellow, or pink flowers.Quinine is an alkaloid, a naturally occurring chemical compound. … Quinine was first isolated in 1820 from the bark of a cinchona tree. Bark extracts have been used to treat malaria since at least 1632.