Monster Energy Ultra Fantasy Ruby Red Zero Sugar 500ml Can is a vibrant, carbonated energy drink that delivers a bold, refreshing ruby red grapefruit flavor with a smooth, crisp finish. Containing zero sugar, 10 calories, and 150mg of caffeine, it’s powered by Monster’s signature energy blend, including taurine, ginseng, L-carnitine, and B vitamins, offering a light, invigorating boost without a sugar crash. Not too sweet or tart, its citrusy taste, designed with input from artist Pinky Taylor, evokes a carefree, high-energy vibe perfect for any occasion.

Packaged in a sleek 500ml can with a striking ruby, pink, and twilight-blue design, Ultra Fantasy Ruby Red is ideal for on-the-go refreshment, whether fueling workouts, long workdays, or social moments. Formulated with sweeteners like sucralose and acesulfame potassium, it avoids artificial colors and suits sugar-free lifestyles. With a high caffeine content (30mg/100ml), it’s not recommended for children, pregnant women, or caffeine-sensitive individuals. A must-try for energy drink enthusiasts, this drink blends a zesty citrus profile with Monster’s high-energy performance.[](https://www.monsterenergy.com/en-us/energy-drinks/zero-sugar/ultra-fantasy-ruby-red/)[](https://sporked.com/article/monster-ultra-fantasy-ruby-red-review/)