FLUIDEXTRACTA. 



71 



shall contain the prescribed amount of alkaloid. This alkaloidal strength, in the case 

 of aconite, must be not less than 0.45 mg., nor more than 0.55 mg., per millilitre. For 

 assay see U. S. P. IX, 177.) 



Note: Appearance Smell 



Color ~ Taste _ 



Make the official Fluidextractum Cascarae Sagradae ''Type Process D," as follows: 

 To 100 Gm. cascara sagrada, in No. 40 powder, add 500 mils boiling water; mix 

 thoroughly, cover, place in a warm place, and permit maceration to continue for two 

 hours ; then transfer to a metallic percolator, and allow percolation to proceed, grad- 

 ually adding extra amounts of boiling water until the drug is exhausted. Over a water 

 bath evaporate the percolate to 75 mils. Cool, and add 25 mils alcohol to complete the 

 product. 



Note : Appearance 

 Color .. 



Odor 

 Taste 



Fluidextracts should be kept tightly stoppered in amber-colored bottles, protected 

 from the sunlight and extreme temperature changes. If after one month sedimenta- 

 tion occurs, the clear portion should be decanted, the part remaining should be filtered, 

 and the filtrate thoroughly mixed with the decantate. 



There are 49 official Fluidextracts, the majority of which are superfluous, inert, 

 or obsolete. 



Properties of the more useful official Fluidextracts: 



