A 36-year-old food delivery worker in Shenzhen, Guangdong province, was hospitalized after consuming six bottles of energy drinks in a single day, leading to severe health complications. The man, surnamed Hu, was found unconscious by his family after attempting to stay alert during his evening shift. He experienced symptoms including a racing heartbeat, fever, sweating, and recurring seizures, with one episode lasting up to 30 minutes. Hu was rushed to the intensive care unit at the Third People’s Hospital of Shenzhen, where tests revealed caffeine intoxication. Despite medical interventions to promote excretion, such as hydration and diuretics, toxicology tests detected high levels of caffeine in his blood and urine 40 hours after consumption. Doctors estimated that Hu had ingested 300 to 350 milligrams of caffeine, far exceeding the European Food Safety Authority’s recommended daily limit of 400 milligrams. Caffeine poisoning can cause severe symptoms, including convulsions, impaired consciousness, and even death in extreme cases. After targeted treatment, Hu recovered and was discharged. Medical experts warn that excessive caffeine intake can overstimulate the central nervous system, leading to palpitations, anxiety, and toxic encephalopathy, and urge adherence to recommended consumption limits.