An entirely new take on energy drinks. Original Clean Energy: a new breed of energy drink, revolutionary in its simplicity. ItÍs a concentrated brew of guayusa, so itÍs naturally filled to the brim with antioxidants and caffeine. Refreshing both in its taste and its short, simple list of ingredients, this can gives you all the Clean Energy you need to do the things you love. Guayusa (gwhy-you-sa) is an Amazonian super-leaf naturally packed with caffeine and antioxidants. RunaÍs guayusa is certified organic, Fair Trade, non-GMO, and Kosher.