Intense Energy Pre Workout. Potent combination of high-powered thermogenic compounds. L-Citrulline and Leucine to prevent muscle catabolism. Three stage energy blend. The description of Mr Hyde as an almost prehuman creature and his actions that occur without thought, suggests that Mr Hyde is more animal than man" Ð Sir Robert Stevenson, Author "Dr Jekyll and Mr Hyde". From the training journal of former IFBB pro art atwood comes the most extreme and effective pre-workout on the market: ProSupps Mr Hyde. Mr hyde gives you a serious kick in the a! Loaded with l-leucine, proprietary stimulant blends and the novel pump agent agmitine sulfate, Mr hyde will literally shatter weight-training plateaus.