Product description guarana seed has been used by indigenous amazon tribes for centuries to help to reduce mental fatigue and to help increase concentration and alertness the guarana plant a member of the soapberry family is a climbing shrub native to the amazon rainforest it gets its name from a local word which means secret eyesas the fruit which is about the size of a hazelnut contains a white aril and black seed giving the appearance of an eye it gains its energizing benefits from