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---Constituents---Rosin-weed yields an abundance of a resinous secretion, resembling mastic so closely that it might very well be used as an inexpensive substitute.
---Medicinal Action and Uses---Tonic, diaphoretic, alterative.
The resin has diuretic properties and imparts a strong, aromatic odour to the urine. The root has been used as an expectorant in cough and other pulmonary troubles. It is cut into slices, arranged in a dish in layers, each layer being strewn with sugar and the whole covered with brandy. It is then expressed and strained, and after standing for a few days is bottled.
Both Rosin-weed and Compass-weed ate said to be emetic in decoction, and to have effected cures in intermittent fevers, and to have cured the heaves in horses. They are beneficial in dry, obstinate coughs, asthmatic affections, and pulmonary catarrhal diseases. A strong infusion or extract is said to be one of the best remedies for the removal of ague cake, or enlarged spleen, and for internal bruises, liver affections, and ulcers.
---Dosage---Of Silphium perfoliatum, 20 grains. Of fluid extract of Silphium laciniatum, 1/2 to 1 drachm.
See CUP PLANT.
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