The federal government and the New York Attorney General’s office are investigating after the Food and Drug Administration received claims that the drink 5-Hour Energy may have led to 13 deaths and 33 hospitalizations over the past four years. The popular energy shot - which comes in 2 oz. packages and packs a powerful caffeine punch, equal to two cups of coffee -- led the way in this new and growing energy drink segment over the past eight years. Now government officials are investigating whether the product, made by Michigan-based Living Essentials, does much more.