Organic Guarana Elixir, Rio Amazon, 10 x 15ml

Organic Guarana Elixir Ingredients: White wine* (contains sulphites), guarana dry extract* (Paullinia cupana Kunth ex H.B.K.–240.0mg/15ml).

Study:

This study looked at guarana supplementation and cognitive performance. From this study: “Initial studies conducted by Galduróz and colleagues^(9,10) evaluated the acute (1 g/d for 3 d) and chronic (1 g/d for 150 d) cognitive effects of guarana supplementation. This was assessed in young and elderly individuals but found no changes to cognition, sleep or anxiety in either group. No further studies have assessed the long-term effects, but several studies have since reported significant acute cognitive changes following guarana supplementation^(7,11–13). Kennedy et al. ⁽¹¹⁾ found both speed of attention and secondary memory were improved by a 75 mg dose of guarana. The increase in speed of attention is reflected in a decrease of reaction time observed in several other studies. Haskell et al. ⁽⁷⁾ corroborated that secondary memory was improved with both 75 and 37·5 mg of guarana.

The findings of this study indicate that acute guarana supplementation leads to significant improvements in both CRT and SRT. This is true before and after a maximal bout of exercise, which is consistent with a heightened feeling of alertness. This improvement, with respect to placebo, is evident in guarana alone, despite a matched dose of caffeine content in the caffeine supplement. These effects appear promising for the use of guarana in sports which require fast response times to be maintained through high intensity physical activity.”