Monster Zero Ultra Monster Energy Drink, 16 oz. is designed to give you the extra boost you need to power through any task. With 150 mg of caffeine per can, this energy drink a light and refreshing citrus flavor that delivers the classic Monster taste. It features a zero ultra-blend that contains no sugar and no calories, making it a lighter-tasting to the Monster energy drink. Packaged in a convenient 16 fl. oz. can, it’s for those who want energy without the added calories.