5 hour energy extra strength is available in grape flavor and weighs 12/1.93 oz. Grab a grape flavored Extra Strength 5-hour ENERGY shot. It?s packed with a big energy blend and big taste. The only thing small about it is its size. Take a grape flavored Extra Strength 5-hour ENERGY shot and get hours of energy. Grape Extra Strength 5-hour ENERGY shots are packed with a blend of B-vitamins, amino acids and caffeine comparable to 12 ounces of the leading premium coffee. Zero sugar, 4 calories, and amazing taste. It is a sugar free energy drink and only contains four calories. Drink it in seconds, feel it in minutes, lasts for hours.