Guarana powder is certified organic powder containing caffeine and a variety of other nutrients including vitamins B and C, tannins and choline. It is ideal in smoothies, juices, shakes and protein drinks. Guarana is the well-known stimulant from the Brazilian rain forest used for increasing concentration. It is indigenous to the Amazon Basin and is mainly cultivated between Maues and Manau in Brazil. The fruit of Guaranais hazelnut size, deep yellow to red orange which bursts open to expose one purple-brown to black seed.