Extractum Valerianae, B.P.C. Extract of Valerian.

Botanical name: 

Format explanation

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).

The British Pharmaceutical Codex, 1911, was published by direction of the Council of the Pharmaceutical Society of Great Britain.