The effects of long-term administration of
guarana on the cognition of normal, elderly volunteers
by
Galduroz JC, Carlini EA.
Brazilian Information Center on Psychotropic Drugs
of the Department of Psychobiology,
Federal University of Sao Paulo, Brazil.
Rev Paul Med 1996 Jan-Feb;114(1):1073-8

ABSTRACT

Paulinia cupana (guarana) is a Brazilian plant given great prestige in popular medicine, for example as being a potent stimulator of brain functions. The authors assessed the effects of the long-term administration of guarana on the cognition of normal, elderly volunteers. Forty-five volunteers were studied, with a random distribution in three experimental groups: placebo (n = 15), caffeine (n = 15), and guarana (n = 15), in a double-blind study. There were no significant cognitive alterations in these volunteers.

DMAE
Caffeine
Guarana
Hydergine
Vinpocetine
New brain cells
Centrophenoxine
The memory switch?
Cholinesterase inhibitors
Anti-muscarinics/dumb-drug euphoria

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