Zero calories + zero sugar. Monster Energy Blend: Taurine, panax ginseng extract, l-carnitine, caffeine, glucuronolactone, guarana extract, inositol. Caffeine From All Sources: 71 mg per 8 fl oz serving (142 mg per can). People have been blowin' up our inbox for years asking for a zero calorie monster. We got is, but this ain't soda pop, dude! Making a zero calorie, zero sugar drink, that's good enough to earn the Monster M ain't that easy. Finally with a re-tooled energy blend, new sweetener system and after hundreds of failed flavors, we absolutely got it right! Monster Absolutely Zero: helps fight fatigue, improve mental performance and focus, and motivates you to work (I mean play) harder, so generally you feel pretty damn good. Zero calories, zero sugar, Monster buzz - Absolutely Guaranteed! Monsterenergy.com. Facebook. Instagram. Twitter. YouTube.