Green energy combines fragrant potent green tea with kombucha and guarana a shrub native to the amazon basin of south america guarana seeds were said to have been used by south american indians in a variety of recipes to help maintain their energy as they worked throughout the day enjoy this delicious and effective tea when you need to keep your energy levels up green energy combines fragrant potent green tea with kombucha and guarana a shrub native to the amazon basin of south america g