Composed of powdered opium, 500 parts; purified petroleum, q. s. Made by repeated maceration, agitation and percolation with purified petroleum benzine. The petroleum benzine removes narcotic and odorous principles, which cause nausea and disagreeable after-effects in opium. Contains 12 to 12.5 per cent of morphine.
Dose.—Same as powdered opium.
VINUM OPII—WINE OF OPIUM
Composed of opium, cloves, cinnamon and sherry wine. Recommended for dogs suffering from diarrhoea.
Dose.—Same as the tincture of opium.
MORPHINA—MORPHINE
An alkaloid obtained from opium.
Properties.—Colorless or white, shining prismatic crystals, or fine needles, or crystalline powder; odorless and having a bitter taste; permanent in the air; soluble in 3330 parts of water. The latter are preferable owing to their greater solubility.
MORPHINAE HYDROCHLORIDUM—MORPHINE HYDROCHLORIDE
Morphine is stirred with hot distilled water, to which hydrochloric acid is gradually added. Morphine hydrochlorate crystallizes out on cooling.