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CINCHONA. 



CINCHONA. 



Cinchona is the dried bark of several species of Cinchona (Fam. Rubiacece). 

 Yellow Cinchona is chiefly from C. Calisaya and C. Ledgeriana; Red Cinchona is ob- 

 tained from C. sucdrubra all native trees of South America. In the bark of Cin- 

 chona are found over 25 different alkaloids, the most important of which is Quinine, 

 though the sulphate salts of both Cinchonidine and Cinchonine are official. There are 

 nine official salts of Quinine ; the Hydrochloride and the Tannate amply meet all indi- 

 cations for quinine action. The Sulphate has had the widest use hitherto. 



Properties: 



Quinine is specific for malaria, in a great percentage of all cases. It has very lit- 

 tle therapeutic efficiency otherwise. 



The other official alkaloids and salts are: Quinina, Q. Bisulphas, Q. Dihydro- 

 chloridum, Q. Salicylas, Q. Hydrobromidum, and Q. et Ureae Hydrochloridum. 



From Yellow Cinchona are made a Fluidextract and a Tincture; from Red Cin- 

 chona, a Compound Tincture (Huxham's). 



