Extractum Valerianae, B.P.C. Extract of Valerian.
Related entries: Valerian
|Valerian Rhizome, in No. 40 powder||100.00|||||20 ounces|
|Alcohol (70 per cent.), a sufficient quantity.|
Moisten the drug with the alcohol, pack in a percolator, cover the powder with more of the alcohol, allow to macerate for forty-eight hours, and exhaust by percolation; then recover most of the alcohol by distillation, and evaporate the residue to a firm extract.
Dose.—6 to 30 centigrams (1 to 5 grains).