The first thing that lured me to Extreme Impulse Sugar Free was a two for a dollar sale, not its can, which isn't particularly attractive. Sure, it's somewhat edgy, with many sharp points spread about the packaging, but by having the text come in different colours, fonts, and sizes, your eyes are easily distracted.
Much like its sugared sibling, the flavour concentrates namely on lime, though it's almost entirely swallowed in needlessly rough carbonation and is followed by a slight edge of unfocused bitterness. The fruit itself is ill defined and improperly sweetened, with a slight sourness being all that elucidates anything natural for the citrus. The impassioned effervescence obfuscates the new taste of melon, the variety unknown, and what you can notice of it is seen abreast to the mild bitterness. The experience is now almost done, thankfully, however with the last few sips the drink seems to thicken and clog the back of your throat. It's an unpleasant cloyingness that's surprising considering how dry the general flavour is. Overall, by removing the syrupy saccharinity I enjoyed so much in the original, Extreme Impulse Sugar Free is a monotonous chore to finish.
Each can contains: caffeine, taurine, inositol, various B vitamins, and vitamin C. The energy cocktail is rather basic but gets the job done, with it resulting in a kick lasting something under four hours. All in all, the original Extreme Impulse was a guilty pleasure, but this sugar free variety removes not only all of the guiltiness but also all of the pleasure.