1. Guarana seeds contain a high concentration of methylxanthines and flavonoids, which are responsible for many of its health benefits.

2. Guarana consumption was associated with a significant enhancement in response times during cognitive tasks, with an effect size of g = 0.202 (p = 0.005). This indicates that participants were quicker to respond after taking guarana compared to a placebo.

3. In addition to improving reaction times, guarana also showed positive effects on the accuracy of performance in cognitive tasks, indicating that it may help individuals perform tasks more effectively.

4. Findings suggest that guarana may have stimulant-like effects, enhancing information processing speed without significantly affecting task accuracy.

Reference:

Effect of Guarana (Paullinia cupana) on Cognitive Performance: A Systematic Review and Meta-Analysis PMCID: PMC9865053  PMID:36678305