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  • Our Drinks
  • Science
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  • Sports Nutrition
  • Try 6 Flavors
  • Our Drinks
  • Science
  • Team C4
  • Sports Nutrition
  • Try 6 Flavors

It starts with
the formula

Today, more than ever, any advantage should be your advantage. The science behind our C4 Energy and C4 Smart Energy gives you the daily edge to crush every obstacle and be ready for whatever comes next.

Brain

C4 Smart Energy

C4 Smart Energy sharpens your attention, boosting memory and performance.

Clean Energy

Innovatea®

INNOVATEA® Delivers the clean energy of naturally derived caffeine.

C4 Smart Energy also includes Innovatea®, naturally derived caffeine from Green Tea, free from pesticides, and Non-GMO project verified.

Focus + Attention

Cognizin®

Take Citicoline. It’s a naturally occurring nutrient in our brains, and it helps our neurotransmitters send signals across billions of synapses. When we are depleted of Citicoline, neurotransmission may suffers.

Cognizin® is a proprietary form of Citicoline, and the subject of numerous clinical studies, setting it apart from many other Citicoline ingredients

A clinically-studied ingredient, Cognizin boosts helps increase levels of phosphatidylcholine, an important phospholipid that helps protect brain membranes, and strengthen cell structure, maximizing enhance neurotransmitter output, and it supports healthy mitochondria, the cellular engines powering the brain.1

THE C4 SMART ENERGY BENEFIT IS GREATER MENTAL ENERGY, FOCUS AND ATTENTION.

Mental Alertness

N-Acetyl-L-Tyrosine

N-Acetyl-L-Tyrosine is a more soluble form of L-Tyrosine, which supports the production of noradrenaline and dopamine, in turn supporting mental and cognitive health during stressful activities – such as physical training.

Natural Flavors

Free of artificial colors and flavors, C4 Smart Energy comes in a wide range of dynamic flavors including Cotton Candy, Electric Sour, Freedom Ice, and Peach Mango Nectar.

1. Improved Attentional Performance Following Citicoline Administration in Healthy Adult Women Erin McGlade1,2, Allison Locatelli1 , Julia Hardy1 , Toshikazu Kamiya3 , Masahiko Morita4 , Koji Morishita4 , Yoichiro Sugimura4 , Deborah Yurgelun-Todd1,2 1 Brain Institute, University of Utah, Salt Lake City, USA; Department of Psychiatry, University of Utah, Salt Lake City, USA; 3 Kyowa Hakko USA, Inc., New York, USA; 4 Kyowa Hakko Bio Co., Ltd., Tokyo, Japan. Email: erin.mcglade@hsc.utah.edu Received February 23rd, 2012; revises April 16th, 2012; accepted April 23rd, 2012, Read More

Body

C4 Energy

C4 Energy promotes endurance, hydration and heightened physical performance.

Explosive Energy

Caffeine Anhydrous

200mg of Caffeine Anhydrous delivers key pre-workout benefits.

From boosting the metabolism and promoting fat burning, it increases endurance, improves circulation, pain reduction and preserves muscles.

Natural Hydration

Betapower® Betaine

Naturally-derived from beets, BetaPower Betaine helps to support hydration and better physical performance.

  • An increase of 30% in squat repetitions after a 7-day betaine intake.3
  • An increase of 60% after a 14-day betaine intake.3
  • A significant increase in the quality of repetitions performed (at reps performed at 90% of the subjects’ maximal performance) after 7-day and 14-day betaine intake.3

BetaPower Betaine delivers C4 Energy the power of beets—call it our super food.

Muscular Endurance

CarnoSyn®

Take CarnoSyn®. A clinically-studied form of Beta-Alanine, an amino acid found within our skeletal muscle tissue. CarnoSyn® is backed up by 55 studies that support its effectiveness in INCREASING MUSCULAR ENDURANCE, SUSTAINING PEAK POWER OUTPUT DURING ANAEROBIC TRAINING, AND REDUCING PERCEPTION OF FATIGUE*

  • Cyclists saw a boost of 11.4% above baseline, in improved muscle endurance but while fatigued at the end of a time trial, compared to placebo, after 8 weeks of usage.2
  • High-intensity interval training athletes increased their muscular endurance and better lean body mass in 6 week trial.2

Only C4 Energy features CarnoSyn®.

Mental Alertness

N-Acetyl-L-Tyrosine

N-Acetyl-L-Tyrosine is a more soluble form of L-Tyrosine, which supports the production of noradrenaline and dopamine, in turn supporting mental and cognitive health during stressful activities – such as physical training.

Powerful Performance

L-Citrulline

Citrulline is an amino acid that occurs naturally in the body. Increasing your intake may have beneficial effects on exercise performance as Citrulline increases blood flow by increasing nitric oxide production. Citrulline may also produce positive effects on muscle by stimulating protein synthesis and decreasing amino acid breakdown during workouts.
2. Van Thienen R, et al., 2009. Beta-alanine improves sprint performance in endurance cycling. Med. Sci. Sports Exerc. 41: 898–903 Baguet A, et al., 2010. Important role of muscle carnosine in rowing performance. J Appl Physiol, 109: 1096−1101. Smith AE, et al. Effects of beta-alanine supplementation and high-intensity interval training on endurance performance and body composition in men; a double-blind trial. J Int Soc Sports Nutr. 2009;6: 5.
3. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2651845/
*Studies have shown performance benefits of beta-alanine to be correlated with muscle carnosine concentrations, which increase with cumulative use.

Elevate your energy Now

Get 25% OFFC4 Variety 6-Pack

The taste and effects are way better than other energy drinks out there.”

AC - Verified Reviewer

I get a very clean, focused energy after drinking this. No jitters, no crash.”

Logan M - Verified Reviewer

These outperform other products and actually give me a pick-me-up.”

Ethan R - Verified Reviewer

Tasty, revitalizing, and somehow someway there are zero calories and sugar.”

Todd K. - Verified Reviewer

This has saved me on days where I need to turn it up to an 11.”

Natalie T. - Verified Reviewer

If it's for life or for the gym, this is a great pick me up!”

Chuck C. - Verified Reviewer

Serves as a mental cue that it's time to get to work.”

Bowen - Verified Reviewer

I use this to focus and get past my slump at work – it has made a huge difference.”

Amazon Reviewer

Man... the freedom ice is my absolute FAVORITE beverage of all time.”

DK - Verified Reviewer

What's more to need? Physical energy; mental energy. Such a great all-around beverage!”

Cee - Verified Reviewer
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*Based upon cumulative global sales of all C4® Energy branded products from 2004 to present.

**These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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