Guarana contains more caffeine than coffee, but both substances have health benefits. Consuming too much caffeine from any source can cause unwanted side effects. Guarana and coffee contain different ...

Guarana is a climbing plant native to Brazil and other parts of the Amazon region of South America. Its seeds have very high levels of caffeine — about twice as much as coffee beans. Its stimulant ...

Explore how guarana’s potent mix of caffeine and polyphenols is driving research into its role as both a metabolic modulator and a cognitive enhancer, uncovering its promise and the gaps that remain ...