We've been pioneering, building, and perfecting pre-workouts longer than some brands have been in sports nutrition. For nearly a decade, the C4 family has led the category with explosive energy and performance, the best flavors, clinically studied ingredients, and cutting-edge formulas.
* We're obsessed with research, improvement, and results. We're innovators and leaders. We have a legacy of building the best pre-workouts on the market, because that's precisely what we want to take.
All our obsession comes together in C4 Ultimate Project Clear Evolution. Ultimate delivers energy you can feel, powerful pumps, muscular endurance, extreme focus, and peak performance.
* Since its launch in 2016, C4 Ultimate has defined what it means to be the industry's best pre-workout, delivering unrivalled energy, focus, pumps, and performance. To lead the pack and remain the best, the best don't rest—they evolve. This is the evolution of C4 Ultimate.*
Created by bonding citrulline with patented nitrates, NitraMax (NO3-C) is an advanced compound that delivers dual-pathway nitric oxide (NO) support. Unlike citrulline or citrulline malate, which work through a single mechanism, NitraMax supports two mechanisms of NO creation, the arginine pathway (eNOS) and the nitrate-nitrite conversion system, to help promote the ultimate pump.
Caffeine is a well-studied stimulant that has numerous energy, performance, and even thermogenic benefits. The amount of caffeine in C4 Ultimate has been clinically shown to support an increase in power output and aerobic exercise capacity.
TeaCrine is a patented and clinically studied novel ingredient that helps support an extended energy experience.
Every serving of C4 Ultimate delivers 3.2 grams of patented CarnoSyn Beta-Alanine to fight fatigue and support muscular endurance.
Creatine hydrochloride is a patented, clinically studied, and highly absorbable form of creatine. Creatine supports ATP production, muscular size, and strength.*