GOING NATURAL? As energy drink sales soar like a caffeine-fueled rocket, more drinks are promoting organic ingredients, added juices, natural caffeine and so-called "clean" energy.
HEALTH SCRUTINY: Claims of cleaner caffeine boosts come as energy drinks find themselves under increasing scrutiny, particularly for their health effects on children and adolescents.
CAFFEINATED MARKET: Energy drink sales hit $12.6 billion last year, representing a 14 percent jump from 2008, according to market research firm Packaged Facts. While Red Bull, Monster and Rockstar still dominate the U.S. market, part of the recent growth comes from new kinds of products, including diet and natural energy drinks.