Americans love caffeine, and not just in soda and coffee. Sales in caffeinated energy drinks may reach $19 billion this year. Sales in new caffeinated snacks and candy, like Energy Gummi Bears and Jolt Gum, exceeded $1.6 billion last year. But the Food and Drug Administration is concerned about the potential health impacts of these new caffeinated products, particularly those that appeal to children. The FDA is reviewing reports of six deaths allegedly associated with energy drinks. But companies that make caffeinated food and drinks argue their products are safe and that they don’t market to children.