Our original pre-workout that started it all - C4 Original is built to take your energy, muscular endurance, and pumps to the next level. Ranging from beginners all the way up to the elite competitors, C4 pre-workout products ignite your fitness journey. Take your training to the next level with explosive C4 Energy from 150mg of caffeine. Power tough trainings with CarnoSyn® Beta-Alanine, which helps combat muscular fatigue and support muscular endurance* With billions of servings of C4 branded products sold, the C4 brand has been setting the standard for great flavor for over a decade.* Enhance your pumps via a unique patented combination of Creatine and Nitrates.