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---Constituents---Columbamine, Jateorhizine and Palmatine, three yellow crystalline alkaloids closely allied to berberine; also a colourless crystalline principle, Columbine, and an abundance of starch and mucilage.
---Medicinal Action and Uses---A bitter tonic without astringency, does not produce nausea, headache, sickness or feverishness as other remedies of the same class. It is best given as a cold infusion; it is a most valuable agent for weakness of the digestive organs. In pulmonary consumption it is useful, as it never debilitates or purges the bowels. The natives of Mozambique use it for dysentery It allays the sickness of pregnancy and gastric irritation. In Africa and the East Indies it is cultivated for dyeing purposes.
---Preparations---Calumba is generally combined with other tonics. For flatulence, 1/2 oz. of Calumba, 1/2 oz. of ginger 1 drachm of senna, added to 1 pint of boiling water, is taken three times daily in wineglassful doses.
Calumba can be safely combined with salts of iron and alkalies, as it does not contain tannic or gallic acid. The powdered root, 10 to 15 grains. The solid extract, 2 grains. The powdered extract, 2 grains. The fluid extract, 10 to 30 minims. The infusion, B.P., 1/2 to 1 drachm. The tincture, B.P. and U.S.P., 1/2 to 1 drachm. The concentrated solution, B.P. 1/2 to 1 drachm.
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