5-hour Energy Regular Strength Sugar Free Grape Energy Shot 1.93 oz. Pack of 12. Whether you’re fighting the day to feel energized, or getting prepared for a large backyard cookout, Grape flavored Regular Strength 5-hour ENERGY shots are the perfect companion for those who don’t want to slow down. Small size, at 1.93 ounces, make them fast to take. Pack sizes will help you make sure you have them on hand for when you need them the most. Regular Strength 5-hour ENERGY contains zero sugar, four calories, amino acids, B vitamins and caffeine comparable to 12 ounces of the leading premium coffee.