Monster Ultra Rosa is a zero-sugar energy drink with a bright, fruity flavor and light floral notes, giving it a crisp and refreshing taste that is smoother and less sweet than many traditional energy drinks. It contains Monster’s signature energy blend—including caffeine, taurine, ginseng, L-carnitine, and B-group vitamins—which helps increase alertness, boost energy, and reduce fatigue. A typical 500 ml can provides about 150 mg of caffeine, 0 g sugar, and very few calories.