NARCOTICS.
A narcotic is a remedy which, in medicinal doses, allays morbid sensibility, relieves pain, and produces sleep; but which, in overdoses, produces coma, convulsions, and death. The quantity necessary to produce these results varies in different individuals. We shall mention a few of those most frequently employed.
Henbane (Hyoscyamus Niger). The leaves and seeds are used. Henbane, in large doses, is a powerful narcotic and dangerously poisonous. In medicinal doses, it is anodyne and antispasmodic; it allays pain, induces sleep, and arrests spasms. Dose—Of the fluid extract, five to ten drops; of the solid extract, from one-half to one grain; of the concentrated principle, Hyoscyamin, from one-twelfth to one-fourth of a grain.
Indian Hemp (Cannabis Indica). An East Indian plant. Dose—Of the extract, from one-fourth to one-half grain, of the tincture, from three to eight drops; of the fluid extract, from two to five drops. The plant known as Indian Hemp, growing in this country, possesses very different qualities.
Stramonium (Datura Stramonium). Stramonium, also known as Thorn-apple, in large doses is a powerful narcotic poison. In medicinal doses it acts as an anodyne and antispasmodic. Dose—Of extract of the leaves, from one-half to one grain; of the fluid extract, from three to six drops.