Red Bull SUGARFREE. WINGS WITHOUT SUGAR. Red Bull Sugarfree is a carbonated beverage that provides the wings of a Red Bull Energy Drink without sugar and only 5 calories per 8.4 fl oz can. WHEN TO DRINKRed Bull is a great energy drink to have by your side, and is appreciated throughout the world by top athletes and busy professionals to college students and travelers on long journeys. For those who need WINGS for intense meetings or creative brainstorming sessions, on the field with teammates or competitors, or simply want to get the most out of life, a chilled can of Red Bull Sugarfree Gives You Wings without sugar.