JALAPA. 297 



Substance resembling Resin of Jalap : Aloes, which is bitter. 

 Dose, 2 to 5 gr. 



Preparations of Jalapa : 



1. Extractum Jalapse. Spirituous and aqueous. 2 in 1. Dose, 



5 to 15 gr. 



2. Pulvis JalapsB Compositus. Jalap, 5 ; Acid Tartrate of 



Potash, 9; Ginger, 1. Dose, 20 to 60 gr. 



3. Tinctura Jalapa. 1 in 8. Dose, to 2 fl.dr. 



/%? w a/so an important ingredient of Pulvis Scammonii 

 Compositus. 3 in 8. 



Jalapee Resina is contained in Pilula Scammonii Composita. 



ACTION AND USES. 



The action of jalap closely resembles that of scammony, 

 but it is less irritant or likely to gripe. Like it, jalap does not 

 purge unless in the presence of the duodenal fluids ; it is also 

 a powerful stimulant of the intestinal secretion, less so of 

 the bile. Small doses produce a laxative effect; large doses 

 act within two hours, causing several watery stools, and some 

 pain, unless combined with carminatives. 



Jalap is extensively used in the form of the Compound 

 Powder, as a hydragogue purgative to drain off water by the 

 bowel in dropsy, and occasionally as an ordinary smart 

 purgative. The resin in small doses may be used in laxative 

 pills for habitual constipation. As an antnelmintic, jalap occurs 

 in Pulvis Scammonii Compositus. This drug must be avoided 

 when the alimentary canal is inflamed or irritable. 



Dulcamara DULCAMARA. The dried young 

 branches of Sol ami m dulcamara. Bittersweet. From 

 indigenous plants which have shed their leaves. 



Characters. Light, hollow, cylindrical, about the thickness 

 of a goose-quill, bitter and subsequently sweetish to the taste. 



Substance resembling Dulcamara : Chiretta, which has 

 flowers, and is bitter. 



Composition. Dulcamara contains an alkaloid, 8olanin f 

 C.i3H 6? NOi 6 , acting as a glucoside, and breaking up with weak 

 acids into glucose and. solanidin, C2 5 H 39 NO, which can be further 

 decomposed into two other alkaloids, solanicin, and modified 

 solanidln. 



Preparation. 



Infusum Dulcamara. 1 in 10. Dose, 1 to 2 fl.oz. 



