HEMATOXYLON 267 



CATECHU B. P. 



This is the elxtract of leaves and shoots of Uncaria Gamhir. 

 Contains about 45 per cent, of catechu-tannic acid. It has been re- 

 placed in the U. S. P. by the preceding. Dose same as Gambir. 



The above mentioned drugs are similar in action, all contain 

 large amounts of tannic acid to which their action is due. They 

 are often preferred to tannic acid in diarrheas as their action is 

 brought about more slov^ly and is more lasting. This difference in 

 rapidity and persistence of action from tannin is due to the pres- 

 ence of gums and resins, in the preparations of the crude drugs, 

 which retard the breaking up of the acid content. They should 

 never be used in the early stages of diarrhea, until the irritant has 

 been completely removed by a purgative or unless purgation persists 

 after the removal of the irritant. They are often prescribed with 

 chalk or opium as in the following formula : 



Diarrhea. 



R Tincturse Opii ttI xx- 1.3 



Cretse Prseparatas 3 ij - 8. 



Tincturse KramersB 3 ij - 8. 



Acacise q. s. 



Aquse Cinnamomi q. s ad. S iij-90. 



M. et Fiat Solutio. 



Sig. Dram doses for dog. Oxince or two ounce doses for horse every 

 2 to 3 hours. 



* GERANIUM 



Synonym. Cranesbill 



This is the rhizomes of Geranium Maculatum, a perennial of 

 the woody places of North America. It contains from 10 to 28 

 per cent, of tannic acid. 



Action and Uses. It is equivalent in action and uses to the 

 preceding drugs but is more agreeable. 



Fluidextradum Geranii. D. ITt x — xxx; 0.6 — 2. 



* HEMATOXYLON 



Synonym. Logwood 

 The heart wood of Hematoxylon Campechianum, a small tree 

 of Central America and the West Indies. It contains tannic acid 

 and a crystalline red coloring principle, hematoxylin. 



Extractum Hematoxyli. Evaporated watery decoction. H. 



3 ss— iv; 2.— 15. D. gr. v— xv; 0.3—1. 

 Fluidextradum Hematoxyli. H. g ss — ij ; 15 — 60. D. irj, 

 XV — xlv; 1. — 3. 

 * UnoflScial. 



