Oleoresina Piperis, B.P.C. Oleoresin of Pepper.
|Black Pepper, in No. 40 powder||100.00|||||20 ounces|
|Acetone, a sufficient quantity.|
Exhaust the pepper by slow percolation with the acetone, recover most of the acetone by distillation, set the residue aside in a warm place until the remaining acetone has evaporated, and the deposition of crystals of piperine has ceased, then strain through cotton wool, and preserve in a well-stoppered bottle.
Dose.—15 to 45 milligrams (1/4 to 3/4 grain).