Hidden Caffeine

Your anxious, wakeful teenager may not be aware of how much caffeine she’s consuming in the course of a day. Obvious sources include colas, coffee, tea, and energy drinks, but there are hidden ones, such as over-the-counter headache remedies and other kinds of soda. The following chart includes common caffeinated products and the amounts of caffeine they contain:

Contents of a Sampling of Energy Drinks,* Per Serving (240 mL [8 oz])