Cellucor c4 50x is a high quality pre workout that features 50 more of the active ingredients per scoop than the original c4 extremer cellucor c4 50x contains ingredients that are proven to work such as caffeine creatine arginine beta alanine vitamin b6 b12 and vitamin cr cellucor c4 50x provides you with caffeine this is the foundation of most pre workouts this is due to the fact it helps increase energy levels mental focus and alertnessr cellucor c4 50x also features beta alanine