Red Bull burst onto the U.S. market in 1997. Since then, the energy drink sector has exploded in popularity and is now one of the fastest-growing areas of the beverage business. Love them or hate them, energy drinks are here to stay. GAYOT has scoured the grocery aisles to bring you the Top 5 in the land, with contents (controversial to some and indispensable to others) featuring everything from guarana to ginseng to ginkgo biloba. Whether you prefer to get your kicks in sixteen-ounce or energy-shot form, we have a caffeine jolt to suit every taste.