TINCTURA NUCIS VOMICAE—TINCTURE OF NUX VOMICA
Made by solution of the extract of nux vomica, 20 in alcohol, and water to make 1000. Standardized to contain 0.1 per cent strychnine.
STRYCHNINA—STRYCHNINE
An alkaloid obtained from nux vomica, and also obtainable from other plants of the natural order Loganiaceae.
Derivation.—Nux vomica seeds are powdered and strychnine is extracted with water acidulated with hydrochloric acid. The solution is concentrated and strychnine precipitated with lime. It is then redissolved in boiling alcohol and the crystals are deposited upon concentration of the solution.
Properties.—Colorless, transparent, prismatic crystals, or a white crystalline powder; odorless, having an intensely bitter taste, perceptible even in solutions of 1 in 700,000. Strychnine should be tasted with extreme caution. Permanent in the air, soluble in water, alcohol, ether, chloroform, benzine and amyl alcohol.
Dose.—Same as strychnine sulphate.
STRYCHNINAE SULPHAS—STRYCHNINE SULPHATE
Made by the action of sulphuric acid on strychnine.
Properties.—Colorless or white, prismatic crystals, odorless and having an intensely bitter taste. Efflorescent in dry air. Soluble in water and alcohol. Almost soluble in ether.