Caffeine Effervescent is a dietary supplement in the form of effervescent tablets with a forest fruit flavour, designed to help you start a demanding day on more pleasant note. It combines the well-known duo of caffeine and L-theanine (so-called smart caffeine) with a complex of B vitamins, iron, and magnesium. Thanks to caffeine, it increases alertness and improves concentration. The B vitamins, iron, and magnesium together contribute to the reducing levels of fatigue and exhaustion.