Extractum Xanthoxyli Fluidum (U. S. P.)—Fluid Extract of Xanthoxylum.
Related entry: Xanthoxylum (U. S. P.)—Xanthoxylum
SYNONYM: Fluid extract of prickly ash.
Preparation.—"Xanthoxylum, in No. 40 powder, one thousand grammes (1000 Gm.) [2 lbs. av., 3 ozs., 120 grs.]; alcohol, a sufficient quantity to make one thousand cubic centimeters (1000 Cc.) [33 fl℥, 391♏]. Moisten the powder with two hundred and fifty cubic centimeters (250 Cc.) [8 fl℥, 218♏] of alcohol, and pack it firmly in a cylindrical percolator; then add enough alcohol to saturate the powder and leave a stratum above it. When the liquid begins to drop from the percolator, close the lower orifice, and, having closely covered the percolator, macerate for 48 hours. Then allow the percolation to proceed, gradually adding alcohol, until the xanthoxylum is exhausted. Reserve the first nine hundred cubic centimeters (900 Cc.) [30 fl℥, 208♏] of the percolate, and evaporate the remainder to a soft extract; dissolve this in the reserved portion, and add enough alcohol to make the fluid extract measure one thousand cubic centimeters (1000 Cc.) [33 fl℥, 391♏]"— (U. S. P.).
Description, Medical Uses, and Dosage.—(See Xanthoxylum). This is a reddish-brown liquid possessing the acrid pungency of the crude drug. Fluid extract of prickly ash bark is a stimulant, tonic, alterative, and sialogogue, and may be used in all cases where the bark is indicated or desired. The dose is from 10 to 60 minims, 3 times a day (J. King.)