Energy drinks are non-alcoholic beverages containing stimulant substances such as caffeine, taurine, guarana, B-group vitamins, and other components that contribute to increased energy levels, alertness, and physical endurance. These beverages are widely consumed among students, athletes, and individuals experiencing increased workloads during periods of intensive professional activity. This study presents the results of an investigation into the cellular and tissue structures of the rat brain following oral administration of an energy drink over short-term (12 weeks) and prolonged (36 weeks) periods.