A saturated solution of the alkaloid in oleic acid; heated, one part will dissolve in two parts of oleic acid; it may be further diluted with oleic acid or oil. Has not proved so satisfactory a preparation as
Oleum cum Cocaina.
A 2 per cent. solution, more or less, if ordered, in almond oil, is mostly used. This is useful for earache. For the eye a 2 per cent. solution in castor oil is used; for catheters, a solution in equal parts castor and almond oils does well, it is viscid, and does not congeal in winter.
Suppositories and Pessaries of Cocaine have ½ grain (or more, if ordered) in each with cacao-butter.
Tabellæ Cocainæ, Cocaine Tablets. ¹⁄₂₀ grain in each, with chocolate (or more, if ordered).
Dose.—1 every quarter, half-hour, or hour, quickly eaten and swallowed. Useful for sea-sickness, chloroform or alcohol sickness, sickness of pregnancy, &c.
Unguentum Cocainæ. 1 in 30 of lard or lanoline (more or less, if ordered). Cocaine is soluble 1 in 2 of anhydrous lanoline if gently warmed.
Useful where absorption is required, as in facial neuralgia, shingles, eczema, erysipelas, urticaria, and pruritus.
Vaselinum Cocainæ. 4 per cent. (more or less, if ordered).
Suitable for the eye; is very bland; also for smearing catheters, burns, scalds, &c.