Linimentum Sinapis Compositum (U. S. P.)—Compound Liniment of Mustard.
Related entry: Sinapis Nigra (U. S. P.)—Black Mustard
Preparation.—"Volatile oil of mustard, thirty cubic centimeters (30 Cc.) [1 fl℥, 7♏]; fluid extract of mezereum, two hundred cubic centimeters (200 Cc.) [6 fl℥, 366♏]; camphor, sixty grammes (60 Gm.) [2 ozs. av., 51 grs.]; castor oil, one hundred and fifty cubic centimeters (150 Cc.) [5 fl℥, 35♏]; alcohol, a sufficient quantity to made one thousand cubic centimeters (1000 Cc.) [33 fl℥, 391♏]. Dissolve the camphor in five hundred cubic centimeters (500 Cc.) [16 fl℥, 435♏] of alcohol, and add the fluid extract of mezereum; then add the oil of mustard and the castor oil, and finally, enough alcohol to make the product measure one thousand cubic centimeters (1000 Cc.) [33 fl℥, 391♏]. Mix thoroughly"—(U. S. P.).
Action and Medical Uses.—This is powerfully counter-irritant, and may be employed as a revulsive. Care should be exercised in its use, however, as the sores produced by both mustard and mezereum are sometimes productive of great harm, and are difficult to heal.