This paper presents the case of a 55-year-old patient without associated somatic pathology, who came to the ER room of the Psychiatry Clinic for acute psychotic symptomatology, including irritability, irascibility, and overlapping impulsive/explosive manifestations, accompanied by elements of grandeur, with sudden onset and rapid evolution, in the apparent context of excessive use of caffeine-containing energy drinks. The data collected during the psychiatric examination corroborated with the information provided by the family, with para-clinical examinations, and with the anamnesis launched a diagnostic dilemma. This dilemma was between a psychotic disorder induced by caffeine-containing energy drinks and a manic episode with psychotic symptoms, part of a bipolar disorder with a rather masked and clinical evolution unattested medically, with symptomatology augmented precisely by the abuse of caffeine-containing energy drinks.