Why is guarana added to energy drinks?

Guarana is added to energy drinks primarily for its natural caffeine content, which can enhance energy levels, improve mental alertness, and reduce fatigue. Its caffeine is absorbed more slowly than that from coffee, potentially providing a more sustained energy boost. Additionally, guarana contains other compounds like theobromine and tannins, which may contribute to its stimulating effects. Overall, it enhances the drink's energizing properties while appealing to consumers looking for natural sources of stimulation.