Carbonated Energy Drink with Taurine, Ginseng, Caffeine, L-Carnitine and B Vitamins with Sweeteners. ZERO SUGAR| Monster Energy Ultra. Ultra has a refreshing taste and doesn't taste like traditional energy drinks and still has the full Monster energy blend. FRESH FLAVOUR ENERGY. Monster Ultra's lighter tasting flavour profile is a less sweet, carbonated energy drink that delivers refreshment, with 160mgs of Caffeine. Monster Energy Ultra is great for any occasion. UNLEASH THE ULTRA BEAST | Some people are impossible to please. As soon as they get what they thought they wanted, they always want more. Our team riders and Monster Girls are no different they've been dropping some hints lately. They've been asking us for a new Monster drink. A little less sweet, lighter-tasting, zero sugar, but with a full load of our Monster energy blend. We went all out: Monster Energy Ultra.