Synonym. - Brazilian Cocoa. A dried paste chiefly consisting of the crushed or pounded seeds of Paullinia Cupana, Kunth (Paullinia sorbilis, Martius; nat. ord., Sapindaceae.)


Northern and Western Brazil.


Subglobular or elliptic cakes, or cylindrical sticks, hard, dark reddish-brown; fracture uneven, somewhat glossy, pale reddish-brown, showing fragments of seeds invested with blackish-brown integuments; odor slight, peculiar, resembling that of chocolate; taste, astringent and bitter.


It is partly soluble in water, and in Alcohol.


The chief constituents are (1) Guaranine, identical with Caffeine, 4 to 5 per cent. {see p 388); (2) Volatile Oil, a trace; (3) Saponin; (4) Tannic acid.

Dose, 1/4 to 1 dr.; 1. to 4. gm.


Extractum Guaranae Fluidum. Fluid Extract Of Guarana

By maceration and percolation with Alcohol and water, and evaporation. Dose, 1/4 to 1 fl. dr.; 1. to 4. c.c.

Action And Therapeutics Of Guarana

Although there is no reason to believe that guaranine does not produce the same action on the nervous system, heart and kidneys as caffeine, yet it is rarely used except for sick headaches; but in these cases it is sometimes of the greatest service.