Extractum Lobeliae Fluidum Compositum.—Compound Fluid Extract of Lobelia.

Botanical name: 

Related entry: Lobelia (U. S. P.)—Lobelia - Fluid Extract of Lobelia.

Preparation.—Take of recently dried bloodroot, skunk-cabbage root, and lobelia seed and leaves, each, coarsely powdered, 4 troy ounces; alcohol, diluted alcohol, each, a sufficient quantity. Moisten the powders mixed together, with sufficient alcohol, and let them stand for 24 hours; then transfer the mixture to a percolator, and gradually add alcohol, returning a little of the first that passes, until it runs clear. Reserve, by itself, of the first or strongest percolate, 12 fluid ounces; then pour diluted alcohol on the residuum in the percolator, until the liquid that comes through has very little of the color or taste of the medicine; evaporate this latter solution to 4 fluid ounces by a heat considerably below the boiling point, and while warm mix in the reserved tincture, and make 1 pint of fluid extract.

Medical Uses and Dosage.—This fluid extract is emetic, expectorant, and antispasmodic, and may be used as a substitute for the acetated tincture of bloodroot; A fluid drachm of the extract is equivalent to about 1 drachm of the powder; the dose is from 10 to 60 minims, according to the desired effect (E. S. Wayne).

King's American Dispensatory, 1898, was written by Harvey Wickes Felter, M.D., and John Uri Lloyd, Phr. M., Ph. D.