whilst some uncertainty still remains, what is clear is that it was popularized in rio de janeiro, during the first half of the twentieth century, and has gone on to become a very popular produce used in energy drinks and weight loss pills, finding a fertile market place in marvelous city, where everyone is either on the beach, or on the move.

like other caffeine products guaraná keeps the drinker alert, but too much can produce negative effects like insomnia - with time, guaraná has become an everyday soft drink, or refrigerante in portuguese.