[[File:Dichroa Febrifuga.jpg|thumb|Alt=|350px|left|Dichroa Febrifuga]]
Other Names : Dichroa Root, Dichroa Febrifuga, Chinese Quinine<br>
Chang shan is a root extract of a specific type of Himalayan hydrangea plant, also known as hortensiarelated to Hortensia.
==Special Precautions of Chang Shan==
* Because dichroa is slightly toxic, large doses may cause nausea and vomiting in patients with weak constitutions. It should be used with extreme caution, and should not be taken by women who are pregnant or breastfeeding.
* As of this writing, there are no known drug interactions associated with dichroa. As always, however, make sure to consult with a licensed health care provider before taking dichroa or any other herbal remedy or dietary supplement.
==Benefits and uses of Chang Shan are==
Febrifugine is a quinazolinone alkaloid first isolated from the Chinese herb Dichroa febrifuga, but also found in the garden plant [[Hydrangea]]. Febrifugine has antimalarial properties and the halogenated derivative halofuginone is used in veterinary medicine as a coccidiostat. Halofuginone is specifically shown to be an effective drug in malaria, cancer, fibrosis and inflammatory disease.
* Malaria : It has long been used in traditional Chinese medicine often as part of a formula that includes tsaoko, anemarrhena and areca seed to treat malaria and other maladies.
* also useful in treating autoimmune disorders.