Product description guarana is a creeping shrub native to the amazon rainforest that produces clusters of small bright red fruit the seed of which has been used by indigenous tribes for centuries to help to reduce mental fatigue and to help maintain mental awareness it gains its energising benefits from a number of actives that are found in the seed caffeine theophylline and theobromine these stimulants are found in a complex named guaranine that provides gentle stimulation over a period