Pseudoleukocythe- Jalap

(jal’-ap) [from Jalapa, a city of Mexico]. The tuberous root of Ipomcea jalap a (U. S. P.), of Ipomoea purga (Exogonium purga) (B. P.), a plant of the natural order Convolvulaceae. Its active principle is a resin (Resina jalapae, U. S. P.), which contains a glucosid, convolvulin, C31H50O16. Jalap is an active hydragogue cathartic, and is used to remove dropsical effusions by the bowel. Combined with calomel it is a favorite remedy in bilious fever. Dose of powdered jalap gr. xv-xxx (i. 0-2.0). J., Extractum. Dose gr. iv-viij (0.26-0.52). J., Pulvis, Comp. Dose gr. x-^j (0.65-4.0). J., Resina. Dose gr. iv-viij (0.26-0.52). ch402.xhtml j 345