Extractum Kavae Liquidum. Br.
Liquid Extract of Kava
Related entries: Kava
Preparations: Fluidextract of Kava
"Kava Rhizome, in No. 20 powder, 1000 grammes; Alcohol (90 per cent.), a sufficient quantity; Alcohol (45 per cent.), a sufficient quantity. Mix the powdered Kava Rhizome with two thousand millilitres of the Alcohol (90 per cent.); set aside in a closed vessel for forty-eight hours; transfer to a percolator and percolate slowly, reserving the first seven hundred and fifty millilitres of the percolate. Continue the percolation, adding the Alcohol (45 per cent.) until the powder is exhausted; recover most of the alcohol from this percolate by distillation; evaporate the residue at a temperature below 80° C. (176° F.) to a soft extract, and dissolve this in the reserved percolate; add sufficient of the Alcohol (90 per cent.) to produce one thousand millilitres of the Liquid Extract." Br.
This fluidextract was introduced into the British Pharm. (1914), and is also official in the N. F. IV. (See Part III.) It represents kava and may be given in the dose of thirty minims to one fluidrachm (1.8-3.75 mils).