Guarana | No sleep original | 0.25L - GUARANA IS AN ENERGY DRINK Guarana is supposed to make tired people happy . The liana, which belongs to the soaps tree plants and originates originally from the Amazon region, possesses five times the amount of caffeine compared to a coffee bean. Therefore, the guarana plant is often referred to as caffeine liana. In Germany, guarana is known and popular in the form of powder as capsules or as energy drink. Side effects are similar to those that may occur when other foods are consumed with caffeine.