Extractum Salicis Nigrae Liquidum, B.P.C. Liquid Extract of Black Willow.
Related entries: Salix nigra
|Black Willow Bark, in No 20 powder||100.00|||||20 ounces|
|Alcohol (60 per cent.) ...||to 100.00|||||to 20 fl. ounces|
Moisten the drug with the alcohol, pack in a percolator, and exhaust by percolation with the alcohol. Reserve the first 85 (17 fluid ounces) of percolate, distil off most of the alcohol from the subsequent percolate, evaporate the residue to a soft extract, dissolve this in the reserved portion, and add sufficient of the alcohol to make up to the required volume.
Dose.—1 to 4 mils (15 to 60 minims).