Energize your day with Monster Ultra Fantasy Ruby Red — a sugar-free 500 ml energy drink featuring a bright citrus burst of fresh pink grapefruit. Not too sweet, not too tart, it combines Monster’s legendary blend of taurine, ginseng, L‑carnitine, B‑vitamins, and caffeine for performance you can taste. Refreshingly light and only 10 kcal per can, it’s the perfect crisp lift without the sugar crash.