Extract of Hops

Syn. Extractum lupuli (B. P., Ph. L. & E.), E. humuli (Ph. D.), L. Prep. 1. (B. P.) Hop, 8; rectified spirit, 15; distilled water, 80. Macerate the hop in the spirit for 7 days, pre out the tincture, filter, and distil off the spirit, leaving a soft extract; boil the residual hop with the water for one hour, then expre the liquor, strain, and evaporate on a water bath to the consistence of a soft extract. Mix the two extracts, and evaporate at a temperature not exceeding 160° to a pilular consistence.— Dose , 5 to 10 gr. 2. (Ph. L.) From commercial hops (the strobiles or catkins of Humulus Lupulus ), 2 1 ⁄ 2 lbs.; boiling distilled water, 2 galls.; macerate for 24 hours, boil to a gallon, strain whilst hot, and evaporate to a proper consistence. The form of the Ph. E. is nearly similar. 3. (Ph. D.) As EXTRACT of ALOES —Ph. D. Tonic and stomachic, and slightly anodyne and hypnotic.— Dose , 5 gr. to 30 gr.; in dyspepsia, and cases that do not permit of the use of opium. 1 cwt. of ordinary hops yield about 40 lbs. of extract. (Brande.) The druggists usually employ hops 2 or more years old, called by the dealers ‘yearlings,’ ‘olds,’ or ‘old olds,’ because these may be purchased at 2 ⁄ 3 to 1 ⁄ 2 the price of those of the last season’s growth. The first of the above are estimated to have only 2 ⁄ 3 the strength of new hops; the second about 1 ⁄ 2 ; and the last little or none, at least in a medical point of view. 4. (Alcoholic; Extractum lupuli alcohol i cum , L.—Cotter eau.) By displacement with proof spirit. Stronger than the aqueous extract.