This substance, adenosine antagonist at the level of the central nervous system (CNS), in moderate doses produces an improvement in memory, attention, alertness and reactivity in fatigued adults. Currently, it is inadvisable the case of minors because it entails a cognitive overstrain for the brain, and the physiological remedy to relieve fatigue is to take a rest. 3 However, it is still popular in this age group of the population and the "marketing" campaigns are aimed at adolescents, although tolerance to stimulants at these ages is still to be determined. 3 In adults, many adverse effects associated with the consumption of EDs have been detected, mainly, tachycardia, hypertension, motor hyperactivity, increased capacity of attention, increased gastric secretion, diuretic effect and temperature rise. Other more rare and severe are rhabdomyolysis, coronary vasospasm,