Gatorade G2 Thirst Quencher Low Calorie GrapeGatorade® G2® Grape Thirst Quencher. Low calorie. Artificial flavor. 45 calories per bottle. G® series: Prime. Perform. Recover. Gatorade® G2®. Low calorie hydration. Contains no fruit juice. Comments 1-800-884-2867 or visit gatorade.com.. ©2013 S-VC, Inc. Gatorade, G2, G series and G design are registered trademarks of S-VC, Inc.