Red Bull Sugarfree contains the same key ingredients as Red Bull Energy Drink (caffeine, taurine and some B-group vitamins) but is made with non-caloric sweeteners instead of sugars.
The non-caloric sweeteners in Red Bull Sugarfree are Sucralose and Acesulfame K.
Red Bull Sugarfree Editions:
Red Bull Summer Edition Sugarfree
Red Bull Lilac Edition Sugarfree
Red Bull Blue Edition Sugarfree
Red Bull Coconut Edition Sugarfree