Guarana
Guarana is a plant native to the Amazon basin whose seeds contain naturally occurring caffeine. It appears in many energy products as a caffeine source.
Quick answer
Guarana is a plant native to the Amazon region. Its seeds contain caffeine. Energy products sometimes use guarana as one source of caffeine.
What to know
A label might list guarana by name while a separate line gives total caffeine per serving. The total caffeine number matters more than the ingredient name alone when you compare stimulant products. Check serving size, caffeine per serving, number of servings, and other caffeine sources such as green tea extract. Your total daily caffeine intake includes coffee, tea, soft drinks, chocolate, medications, and supplements.
Source / Origin
Seeds of the Paullinia cupana plant.