Naturally flavored with other natural flavors. 30 calories per 12 fl oz serving. 1/2 the sugar (Original Gatorade has 21g sugar per 12oz serving, G2 has 7g sugar per 12oz serving) of Original Gatorade. Lower sugar. Rehydrate replenish refuel. Electrolytes to help replenish what you lose in sweat. Carbs to help refuel working muscles (Original Gatorade has 21g sugar per 12oz serving, G2 has 7g sugar per 12oz serving). gatorade.com. SmartLabel: Scan for more food information or call 1-800-884-2867. Comments? 1-800-884-2867 or visit gatorade.com.