Simplify the following text for a Grade 5 native English-speaking person.
Original: However , subsidiary beverages that contain caffeine , such as energy drinks , most of which contain high amounts of caffeine , have been banned in many schools throughout the world , due to other adverse effects having been observed in prolonged consumption of caffeine .
Simplified: Caffeine is in many drinks and foods . This is approximate amounts of caffeine in some food and drink :