Source and Composition. The strobiles (fruit-cones) of Humulus Lupulus, the hop vine, a cultivated climbing plant of the nat. ord. Urticaceae. The glandular powder of the strobiles is also official, under the name Lupulinum (Lupulin). Humulus and Lupulin contain a liquid, volatile alkaloid, Lupuline, also wax, resins, Lupulinic Acid and a Volatile Oil which consists in part of Trimethylamine and Valerol, the latter being changed into Valerianic Acid by long exposure, giving a disagreeable odor to old hops.
- Tinctura Humuli, Tincture of Humulus,—20 per cent. Dose, ʒj-ij.
- Lupulinum, Lupulin,—a bright-yellow powder,—Dose, gr. ij-xv.
- Extractum Lupulini Fluidum,—alcoholic. Dose, ♏x-ʒj
- Oleoresina Lupulini, Oleoresin of Lupulin,—Dose, gr. ij-v.
- *Infusum Lupuli, Infusion of Hop, (B. P.),—1 in 20. Dose, ℥j-ij.
Physiological Action. Humulus is a bitter tonic, a feeble hypnotic, also diaphoretic, anaphrodisiac and astringent. It increases the cardiac action and the cutaneous circulation. After slight cerebral excitement it produces calm, and a soporific disposition.
Therapeutics. It is used as a tonic and calmative in—
- Delirium Tremens of mild form,—a mixture of the fluid extracts of Lupulin and Capsicum is very efficient, and an excellent substitute for Alcohol.
- Dyspepsia, of atonic form,—Humulus is a very serviceable remedy.
- Inflammation,—a Hop poultice is a favorite domestic application.
- Nervous Irritability,—the Fluid Extract of Lupulin as a calmative and hypnotic; or the Hop pillow, which exercises considerable influence.
A Compend of Materia Medica, Therapeutics, and Prescription Writing, 1902, by Sam'l O. L. Potter, M.D., M.R.C.P.L.