The bark of Populus tremuloides.
Preparation.—Tincture of Populus.
Dose.—From five drops to one drachm.
Therapeutic Action.—The bark of the White Poplar is tonic, stomachic, febrifuge and alterative. It is a mild and not an unpleasant bitter, very well adapted to cases of general debility, emaciation, dyspepsia, attended with torpor of the liver or an unhealthy biliary secretion. It has been used as a tonic and febrifuge in intermittents with decided advantage. This, as well as other species of the Populus, is possessed of properties quite similar to the willow; indeed, its tonic qualities are, probably, dependent on its salicin. It has been exhibited advantageously as an alterative, associated with other alterants, as the burdock, yellow-dock, and yellow parilla, when tonics and alteratives are indicated.