54 
GUAR AN A, AND ITS USE IN MEDICINE. 
lysis made by M. Berthemot and myself, (Journ. de Pharm. 
Aout, 1S40.) 
By our experiments it will be perceived that alcohol is the 
only solvent which will exhaust the guarana of all its active 
properties; consequently it is necessary to use the hydro- 
alcoholic extracts, for the different preparations of this medi- 
cine. 
I will merely call to mind that this extract is obtained by 
exhausting the guarana with boiling alcohol of 22°, distilling 
the tincture to withdraw a large part of the alcohol, and then 
evaporating to the consistency of a pillular extract. 
Lozenges of Guarana or Paullinia. 
J$> Hydro-alcoholic extract of Guarana 21 gram. 3 decigram, 
(329 gr.) 
Sugar scented with Vanilla 500 gram. (7722 gr.) 
Mucilage of Tragacanth q. s. 
To be made into lozenges to contain each about i gr. of the 
extract. 
From 16 to 20 may be taken daily. 
Syrup. 
$t Hydro-alcoholic extract 10 gram. 
Simple syrup 1000 gram. 
Dissolve the extract in a little boiling water, then add the 
syrup, and reduce to a proper consistence. 
From 45 to 60 grammes may be taken daily. 
Pills. 
ffc Hydro-alcoholic extracts, any quantity to be made into 
pills, each containing 1 decigram (1§ gr.) of the extract. 
Four or five to be taken daily. 
Tincture. 
Jfc Hydro-alcoholic extract 32 grms. (50 grs.) 
Alcohol 500 " (7722 grs.) 
Dissolve the extract in the alcohol bv the aid of heat. 
