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Guayusa: The Effect of an Herbal Extract on Alertness and Mental Fatigue
The primary objective of this randomized, double-blind, placebo-controlled, cross-over study is to assess the acute effects of a novel ingredient, guayusa on alertness and mental fatigue compared to a placebo. This trial will utilize the COMPASS cognitive task and cognitive demand battery (CDB) and mood, motivation, and energy measures with assessments taking place at baseline, 60- and 120-minutes post treatment on three separate testing days separated by \~7 days.
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