C4 Original is a pre-workout powder that energizes your workouts and takes your fitness to the next level. C4 Original's high-powered formula features a special blend of patented ingredients that put the edge in energy and performance. When to take C4: You need energy. You want to have a great workout. You want to push yourself to reach new goals. Why C4 Original C4 Original's formula includes ingredients that help promote energy, pumps and performance. TeaCor for improved energy that comes on quickly and lasts longer. Beta Alanine: An amino acid that supports muscular endurance. Beta Alanine produces a tingly sensation throughout the body that lets you know it's working. Creatine Nitrate: Creatine bound to Nitrate. Creatine Nitrate produces two desirable effects on performance: Creatine for strength and Nitrate for pumps. N-Acetyl L-Tyrosine: It is a core part of the essential energy blend. It helps support peak mental and physical performance. Caffeine: A popular and proven source for energy. Based on sales of C4 branded pre-workout products in the U.S.A. from 2014 to the present, C4 is Americas #1 Selling Pre-Workout.