C4 Original ID Series is one of the best-selling pre-workouts currently on the market. C4 Original ID is the perfect pre-workout to rely on when it comes to assisting with insane energy boosts, laser-like focus and enhanced mental clarity. This ground-breaking formulation assists beginners and athletes with increasing output performance and increasing muscle pumps. C4 Original ID Series consists with energy-enhancing ingredients including CarnoSyn Beta Alanine, Creatine and Caffeine which will all blend to create an insane energy boost for your work day or your intense workouts.