Caffeinism refers to the negative effects of consuming too much caffeine. Those at highest risk include business people, teachers, writers, children, babies, and students. Signs and symptoms of caffeinism range from mild effects like headaches and insomnia to more severe issues like trouble breathing, vomiting, and convulsions. Treatment focuses on removing caffeine from the body through methods like activated charcoal, laxatives, or gastric lavage. Patients are also monitored for heart and breathing problems and given supportive care. While caffeine overdose can often be treated without long-term effects, it can be life-threatening, especially for young children, so medical help is advised.