Objective: The objective of this case report is to highlight the possible dangers in individuals with prior psychiatric illness of the use of amino acid and caffeine-containing drinks marketed as energy drinks to combat mental and physical fatigue.
Method: We report on three patients with known psychiatric illness who demonstrated sequelae following use of these beverages with probable association with clinical deterioration leading to hospitalization.
Results: In all three cases, hospitalizations were associated with deterioration of mental state, manifested, amongst other symptoms, by hypervigilance, psychomotor unease and intensified affected responses.