He's concerned about the caffeine levels and possible health impacts.
Emergency room visits by people who had consumed the drinks doubled from 2007 to 2011, according to the government.
"We typically see young people in the emergency department who think they're about to die," Northwestern Memorial Hospital's Dr. David Zich said. "They believe they're about to die because of what they're feeling. And when I find out they've drunk three red bulls sometimes I think 'Are you surprised?'."
The energy drink industry says its drinks are safe and there's no proof they can lead to adverse reactions.
