Made by maceration and percolation with alcohol, partial distillation;
precipitation with water; washing and drying.
PROPERTIES.--Yellowish-brown powder, having a slight, peculiar odor, and
a somewhat acrid taste. Permanent in air. Soluble in alcohol, ether,
fixed and volatile oils.
DOSE.--Pigs, 30 gr. to 1 dr.; dogs, 15 to 30 gr.; cats, 5 to 15 gr.
ACTION AND USES.--Jalap is a hydragogue cathartic, a vermifuge and
cholagogue. By adding calomel to jalap its power is increased; jalap is
more active than senna, but is less powerful and irritating than gamboge
or podophyllum. Jalap may be given to expel round and thread worms; in
torpidity of the liver, and in chronic constipation in dogs.