The agency will look at the potential impact these new sources of caffeine will have on children's health.
Experts warn that those with high blood pressure should not consume energy drinks.
Previously unnoticed ingredients are coming under scrutiny as health-conscious consumers demand more information.
A new study highlights the dangers of mixing alcohol and energy drinks for teenagers.
From 2007 to 2011, the government estimates the number of emergency room visits involving the neon-labeled beverages shot up from about 10,000 to more than 20,000.
