Cinnamomum cassia component called coumarin, which could damage the liver if consumed in larger amounts, European health agencies have warned against consuming high amounts of cassia. Other bioactive compounds found in the bark, powder and essential oils of "C. cassia" are cinnamaldehyde and styrene. In high doses these substances can also be toxic for humans. Cinnamomum cassia Cinnamomum cassia, called Chinese cassia or Chinese cinnamon, is an evergreen tree originating in southern China, and widely cultivated there and elsewhere in southern and eastern Asia (India, Indonesia, Laos, Malaysia, Taiwan, Thailand, and Vietnam). It is one of several species of "Cinnamomum" used primarily
Cassia wine is also a traditional gift for birthdays in China. It is also considered a medicinal wine in traditional Chinese medicine. Li Shizhen's "Compendium of" Materia Medica credits sweet osmanthus with "curing the hundred diseases" and "raising the spirit". Within China, cassia wine is associated with Xi'an and Guizhou, but production now occurs throughout China, including Beijing and at the Hong Jiang Winery in Hunan. Despite the name, the Chinese cassia tree is not used to flavor cassia wine. References to the osmanthus in Chinese literature and poetry are often translated as "cassia" because both trees were formerly known in China