Perfection Is Not A Bad Word

Pursue perfection. We dare you. It's not a bad word; stop treating it like one. Anything less is an offense to your potential. Attack your goal; don’t fear it. What's scarier: Failing to succeed, or failing to step up? Do not settle. Evolve. You were not put here to remain the same. Demand the best from yourself. Pursue perfection in every moment, big and small. You owe it to who you could become.


Performance Energy

Over two years in the making, spanning multiple formula tweaks and hundreds of flavor tests, C4® Extreme has been re-engineered and re-imagined from the ground up to help support explosive energy, extreme performance, powerful pumps, and mental alertness. This is the product that defined a category, now evolved and updated.*

We ran C4® Extreme through several hundred rounds of flavor sampling to make sure it exceeds every expectation, and we didn't settle for anything less than the best. If a flavor didn't measure up, we moved on. We're proud to say that C4® Extreme's flavor array wins in every way—including our new, naturally sweetened flavors.


Nitramax (NO3-C)™

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. Created by bonding citrulline with patented nitrates, Nitramax (NO3-C)™ is an advanced compound that delivers dual-pathway nitric oxide (NO) support.*

C4 Project Clear Evolution Logo
Clean clear evolved c4 project clear evolution

Introducing Project Clear Evolution: our mission to set a higher standard in sports nutrition. To elevate the entire C4® family—and beyond—by pioneering the next generation of premium, better-for-you performance supplements.*

We're swapping artificial colors and flavors in favor of natural options, peeling back prop blends to showcase all the performance ingredients that make our products tick, and boosting our formulas with enhanced inputs for extreme performance. This is the future of sports nutrition, and it starts with the all-new C4® Extreme.*

Patented And Clinically studied

C4 Project Clear Evolution Caffeine

Caffeine anhydrous supports energy, mental alertness, and mental and physical performance.*

C4 Project Clear Beta Alanine

This patented form of beta-alanine has been clinically shown to fight fatigue and improve muscular endurance.*

C4 Project Clear Evolution Nitramax

Our exclusive dual pathway nitric oxide (NO) amplifier is formulated with patented nitrates to support better pumps and arc like lightning in your veins.*

C4 Project Clear Evolution Caffeine

This 2-in-1 performance and pump amplifier, both a creatine and NO booster, is formed when creatine is bonded with nitrates. Creatine Nitrate may help support strength, size, and pumps.*

Zero Sugar
Zero Carbs
Zero Calories
The History of C4®
C4 2011

C4® Extreme explodes onto the pre-workout scene with major launches at GNC, Vitamin Shoppe,, and thousands of independent chains.

C4 2014

C4® continues to push the boundaries of sports nutrition, expanding the line and bringing Energy to Perform™ to new retailers like Walmart, Target, and Kroger.

C4 2015

C4® enters into its Fourth Generation design. The new C4® On-The-Go format launches, and powder packaging gets updated with segmentations of C4® Ripped, C4® Mass, and C450X.

The top-of-the line C4® Ultimate series is born, delivering a new level of explosive energy, performance, and pumps. The C4® ID Series is launched to help people pick the perfect workout.

C4® Original On-The-Go goes carbonated. The iconic yellow can defines a new category, 'performance energy,' in the energy drink market.

Project Clear Evolution, an enhanced sports nutrition platform, comes to life. The legendary pre-workout that started it all, C4® Extreme, is reborn.

The C4® Guarantee

We're committed to your results. At the end of the day, C4® Extreme is built for you, your workouts, and your results.* If you don’t like it for any reason, we’ll gladly refund or replace it. We’re here for you. That’s the C4® Guarantee.

*Statements regarding dietary supplements have not been evaluated by the FDA and are not intended diagnose, treat, cure, or prevent any disease or health condition.