Extractum Cascarae Sagradae.—Extract of Cascara Sagrada.
SYNONYM: Extractum rhamni purshianae.
Preparation.—"Take of Cascara sagrada, in No. 40 powder, 1 pound (av.), proof spirit, distilled water, of each, a sufficiency. Mix the cascara with 2 pints of the spirit, and macerate in a closed vessel for 48 hours; then transfer to a percolator, and when the fluid ceases to pass, continue the percolation with water until 3 pints of liquid have been collected, or the cascara is exhausted. Evaporate the percolated liquid by a water-bath until the extract has acquired a suitable consistence"—(Br. Pharm.).
Medical Uses and Dosage.—(See Rhamnus Purshiana.) A good extract for use in pills. Dose, 2 to 8 grains.