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This is an extract from a plant of the same name in Brazil. It is prepared by the Indians, and appears to possess excitant powers. In Brazil, and the neighbouring countries, it is given in the form of tisane- the powder being mixed with cocoa- in diarrhoea and dysentery. It has been employed also as a tonic. An extract is prepared in Brazil from Paullinia sorbilis, Ord. Sapindaceae, known there under the name of Guarana, which is administered in similar pathological cases.

A genus of sapindaceous plants.