SuddenRush Guarana “Natural Energy Shot / Strong” is a liquid natural energy dose, based on a high proportion of guarana with a caramel flavor. The drinking ampoule contains 165mg of pure and natural guarana caffeine. This shot gives the body the extra energy to perform at peak performance for 4-6 hours. It has its greatest impact at work, during strict examination phases and in sports. Take half an hour before the next training / competition, presentation, exam, important meetings or just after a heavy lunch. 34 kcal per ampoule.