Guarana fruits are about the size of a coffee berry. The color of guarana fruit's are ranges from brown to red and contains black seeds, and the seeds are partly covered by white arils. Guarana contains almost about twice the amount of caffeine found in coffee beans; and hence, these are considered as an effective energy booster.
Guarana is used mainly to produce soft drink. Guarana soft-drink and beverages may cause jitters-which is also associated with drinking coffee.