32 YETERTN'ARY MATERIA MEDICA. 



RESTORATIVE AGENTS. 



All agents producing constructive metamorphosis 

 of tissue are included in this division — as the diges- 

 tive ferments which aid digestion, foods, tonics, hae- 

 matics; also a number of the so-called stimulants. 



Digestive Ferments. 



Pepsin and pancreatin, both organic substances, 

 are the most important of these; papain, papaw or 

 papayotin, a ferment obtained from the milky juice 

 of papaya carica, a South American fruit-tree. 



Pepsin is an organic ferment which constitutes the 

 digestive principle of the gastric juice of animals. 

 It is usually obtained from the mucous membrane of 

 the pig's stomach. 



Pancreatin is obtained from the pancreas of ani- 

 mals and contains four ferments — viz., trypsin, pan- 

 creatic diastase, an emulsifying and a milk-curdling 

 ferment. 



Preparations. 



Pepsinum Purum^ pure pepsin, in yellowish trans- 

 lucent scales soluble in water. Dose: H., gr. xv.- 

 3i. ; D., gr. i.-iij. 



Pepsinum Saccharatwn {U. S. P.), saccharated 

 pepsin, is a mixture of pure pepsin with sugar of 

 milk. Dose: H., 3ij.-vi.; D., gr. v.- 3 ss., after 

 feeding. 



