Extractum Lupulini.—Extract of Lupulin.
Preparation.—Take of commercial lupulin, 4 ounces; alcohol, 8 fluid ounces. Place the lupulin loosely in a percolator, cover with alcohol, and allow it to stand an hour. Then gradually add alcohol until 2 pints of filtered liquor are obtained, or the drug is practically exhausted. Distill or evaporate off the alcohol, reducing the residue to the consistence of a soft extract. The above extract contains the medicinal principles of the lupulin unimpaired, is of uniform strength, and is in a form convenient for pills. Commercial lupulin yields about 40 grains of extract to 1 drachm of the grains.
Medical Uses and Dosage.—(See Lupulinum). This extract possesses the active properties of the hops in an eminent degree, and may be used in all cases where lupulin is admissible. The dose is from 2 to 10 grains, 3 times a day.