CAMPHORA — CAMPHOR 85 



Digitoxinum. Digitoxin is the chief active principle of digi- 

 talis. Its action is very similar to that of the crude drug. Its car- 

 diac action is very persistent, and when the therapeutic effects have 

 passed off, a smaller amount will usually bring about the desired 

 effects than was needed at first. It is very irritant and should not 

 be used for subcutaneous or intramuscular injection. 



Doses. 



Horses and Cattle. Vs — Vi grain (0.008—0.015). Dog. 

 yioo— %o grain (0.0006—0.001). 



Ouabain, Crystallized is a glucoside obtained from Aconcarv- 

 thera ouabaio by Amaud, but also commonly obtained from Stro- 

 phanthiis gratus. It is also known as crystalline gratus strophanthin.. 

 It is a stable glucoside of great activity. The toxic dose is the same 

 as that of digitoxin. It has been recommended as a physiologic com- 

 parison for digitalis on account of its stability. 



PROPRIETARY PREPARATIONS 



Digalen is claimed to be a sterile solution of soluble digitoxin 

 (ClcEtta) containing %25 grain (0.3 mg.) of digitoxin in each 15 

 minims (1 mil), the solvent being alcohol, glycerin and water. It 

 is moderately irritating but may be used hypodermically. 



Doses. 



Horses and Cattle. 4 drams (15 mils). Dog. 5 to 15 

 minims (0.3 — 1.0) intramuscularly. 



Digalen, Veterinary is marketed in tubes of four tablets, each 

 containing 1.125 grams of Fol. Digitalis Titr. It has been especially 

 recommended in the treatment of azoturia of horses. 



Digitpuratum. According to Gottlieb's formula, this is an ex- 

 tract freed from digitonin and most of the extractive matter and is 

 said to contain digitoxin and digitalin tannates. These are stand- 

 ardized and mixed with some inert material so that the dose is the 

 same as for digitalis. It has been found to be a reliable preparation 

 and may be obtained in tablet form. 



Digipoten is a preparation very similar to digipuratum. 



CAMPHORA — CAMPHOR 



Camphor is a stearopten derived from the twigs and wood of 

 ■ Cinnamomum Camphora or made synthetically. It occurs as trans- 

 lucent white gummy masses, soluble in all the usual solvents except 

 water, in which it is only slightly soluble, (8—1000 parts). It may 

 be powdered by adding a few drops of alcohol or chloroform to it 

 before rubbing in a mortar. When triturated with phenol, thymol, 



