Red Bull Zero is Red Bull Energy Drink with zero sugars. The sugars sucrose and glucose have been replaced by the low- and non-caloric sweeteners: erythritol, sucralose and monk fruit extract. Monk fruit extract is a non-caloric sweetener used in a wide range of products, like juices, soft drinks, candies and desserts. a monk fruit extract.
However, Red Bull Zero contains the same combination of the functional ingredients caffeine, taurine and some B-group vitamins as in Red Bull Energy Drink, to offer the choice of wiiings without real sugar.
Learn more about the ingredients of Red Bull Zero here.