• C4 PRE WORKOUT POWDER FOR MEN & WOMEN - America's #1 Selling Pre-Workout Brand has been trusted since 2011 with over 2 billion servings sold*
• BUILD MUSCLE & STRENGTH - Formulated with a fully transparent label with no proprietary blends and innovative performance ingredients
• INCREASE REP COUNT - Formulated with CarnoSyn Beta-Alanine, a premium clinically studied beta-alanine, which has been studied to support muscular endurance and fight fatigue
• ENERGY TO PERFORM - Formulated with 200mg Caffeine to support explosive energy and physical performance when you need it most
• DELICIOUS FLAVORS UNLIKE ANYTHING ON THE MARKET - Fruit Punch, Icy Blue Razz, Midnight Cherry, Twisted Limeade, Ultra Frost, Watermelon
  
  

CLEAN, CLEAR, EVOLVED.

As America's #1 pre-workout brand, we've been pushing the boundaries of performance energy since 2011. Leading. Innovating. Defining what it means to be the best with incredible flavors, cutting-edge formulas, and uncompromising performance. Now, it's time to shatter those boundaries. To leap forward. To evolve.

INTRODUCING PROJECT CLEAR EVOLUTION.

Our mission to set a higher standard. To elevate the entire C4® family—and beyond—by pioneering the next generation of premium performance supplements that exceed your expectations.

Project Clear Evolution is founded on three pillars:

Clean: No artificial dyes. No artificial flavors.
Clear: Fully transparent labels. No proprietary blends.
Evolved: Innovative ingredients. Enhanced formulas.

These core principles are the backbone of Project Clear Evolution. We're swapping artificial colors and flavors in favor of more naturally-derived 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.

FEATURING NITRAMAX (NO3-C™).

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.

REINVENTING A LEGEND.

Over two years in the making, spanning multiple formula tweaks and hundreds of flavor tests, C4 Extreme has been reengineered and reimagined 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.

Building on the legendary C4 performance formula, C4 Extreme is formulated with the following patented and clinically studied ingredients in to fuel your most extreme training sessions:

Nitramax™ Citrulline Nitrate (NO3-C™) -- 1g
Our exclusive dual pathway nitric oxide (NO) amplifier is formulated with patented nitrates to support better pumps.

Creatine Nitrate (NO3-T®) -- 1g
This 2-in-1 performance and pump amplifier, both creatine and NO booster, is formed when creatine is bonded with nitrates. Creatine Nitrate may help support strength, size, and pumps.

CarnoSyn® Beta-Alanine -- 2g
The performance backbone of C4 Extreme, this patented form of beta-alanine has been clinically shown to fight fatigue and improve muscular endurance.

Caffeine -- 200mg
Caffeine supports energy, mental alertness, and mental and physical performance.

N-Acetyl L-Tyrosine -- 200mg
Supports mental and cognitive health during stressful activities like physical training.

Huperzine A -- 50mcg
This nootropic may support memory, learning, and concentration—key qualities for a strong mind-muscle connection and productive training.

CLEAN, CUSTOMIZABLE PROFILE.

In addition to explosive energy and performance, C4 Extreme delivers an extremely clean nutritional profile built with zero calories, zero sugar, and zero carbs, with zero compromises on the amazing flavors you'd expect from C4. With naturally and artificially sweetened options for your palate and preference, clean also means customizable.

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 dedicated to making the industry's best-tasting products, and nothing less will do. We're proud to say that C4 Extreme's flavor array wins in every way—including our new, naturally sweetened flavors.

THE PURSUIT OF PERFECTION.

Perfection is not a bad word. We pursue it relentlessly. It's what drives us to work harder, think bigger, and build better products. Project Clear Evolution and C4 Extreme are parts of our Pursuit of Perfection; C4 Extreme was designed to support yours.

Pursue perfection. We dare you. Anything less is an offense to your potential. Attack your goal; don’t fear it. 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 whom you could become.

That's the C4 Extreme challenge.