Extractum Gossypii Radicis Corticis Liquidum. Br. Liquid Extract of Cotton Root Bark.
Related entries: Cotton Root
"Cotton Root Bark, in No. 30 powder, 1000 grammes; Glycerin, 250 millilitres; Alcohol (90 per cent.) sufficient to produce 1000 millilitres. Mix the Glycerin with seven hundred and fifty millilitres of the Alcohol; moisten the Cotton Root Bark with this mixture and continue the percolation process, using as menstruum first the remainder of the mixture of Glycerin and Alcohol, and afterwards sufficient of the Alcohol to produce the required volume." Br.
The fluidextract of cotton root bark (U. S. P. 1890) was not retained in the U. S. P. VIII or IX, but the National Formulary IV introduced a fluidextract made from the recently-gathered air-dried bark of the root, using alcohol for the menstruum. (See Part III.) The British process requires the use of glycerin which may have a tendency to prevent gelatinization.
Uses.—There is reason to believe that cotton-root bark loses some of its activity in drying. For this reason the preparation of the N. F. IV is to be preferred to the Br. For therapeutic properties of cotton root, see Gossypii Radicis Cortex.
Dose, one-half to one fluidrachm (1.8-3.75 mils).
