Extractum Salicis Nigrae Liquidum, B.P.C. Liquid Extract of Black Willow.
Botanical name:
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).
