Monster Energy just turned 21, so we decided to celebrate by taking those tried and true flavors and turning things up a notch by brewing them up at 6 point ‘oh yeh’ percent to get the job done! Our brewers were able to maintain the same flavors you know without adding any sugar! The Beast is sugar and caffeine free, Nasty Beast is sugar free and with only minimal amounts of natural caffeine from tea additions (under 15mg per 12oz).