Cinnamomum cassia United Kingdom, and India is Chinese cinnamon. "Indonesian cinnamon" ("C. burmannii") is sold in much smaller amounts. Chinese cassia is produced in both China and Vietnam. Until the 1960s, Vietnam was the world's most important producer of Saigon cinnamon, which has a higher oil content , and consequently has a stronger flavor. Because of the disruption caused by the Vietnam War, however, production of Indonesian cassia in the highlands of the Indonesia island of Sumatra was increased to meet demand. Indonesian cassia has the lowest oil content of the three types of cassia, so commands the lowest price. Chinese cassia
Cassia javanica is used medicinally as a substitute to "Cassia fistula" for treating constipation, colic, chlorosis and urinary disorders. Its leaves are effective against herpes simplex and the bark of "C. javanica" is one of the ingredients in ayurvedic and other traditional medicine antidiabetic formulations. "C. javanica" yields a lightweight to heavy hardwood that is used for general construction, furniture and cabinet making. The bark of "C. javanica" is used for tanning in the leather processing industry. Cassia javanica Cassia javanica, also known as Java cassia, pink shower, apple blossom tree and rainbow shower tree (), is a species of tree in