C4 Smart Energy

UPC: 842595118926 MSRP: 35.99 UPC: 842595118902 MSRP: 35.99 UPC: 842595116335 MSRP: 35.99 UPC: 842595116328 MSRP: 35.99 UPC: 842595116342 MSRP: 35.99 UPC: 842595116304 MSRP: 35.99 UPC: 842595117004 MSRP: 32.99 UPC: 842595117097 MSRP: 32.99
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Plant-Based Energy

Powered by InnovaTea® caffeine, which is naturally derived from green tea

Mental Focus

Cognizin® Citicoline & N-Acetyl-L-Tyrosine fuel focus, attention, and alertness

Zero Sugar

Incredible C4 taste with ZERO sugars, carbs, or calories

No Artificial Flavors

Proudly formulated without artificial colors or flavors


Delivers anytime energy and alertness


Clinically studied to support mental focus and attention



Energy to



Built for the innovators, the disruptors, the hustlers and go-getters. Unleash your inner Einstein and tap into the limitless power of your mind.

Powered by InnovaTea® Naturally Derived Caffeine (from Tea), brain-boosting Cognizin®, and the additional support of N-Acetyl L-Tyrosine, C4 Smart Energy delivers energy, focus, and mental performance to help you conquer any task—from work to play, gaming to studying, partying to planning. C4 Smart Energy is proudly made with natural flavors, no artificial colors or dyes, and contains zero calories, sugar, or carbs.

*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.

^The NSF Certified for Sport® certification applies to C4 Energy product produced during and after June 2021. If you have any questions about the certification, we'd love to connect with you at


  • InnovaTea® Naturally Derived Caffeine
    Made from green tea, this naturally derived caffeine delivers anytime energy and alertness
  • Cognizin® Citicoline
    This patented brain-boosting supplement helps support mental focus, attention, and recall
  • N-Acetyl L-Tyrosine
    Helps the body produce key neurotransmitters like dopamine to support mood and cognitive health


    • 16oz - 200 mg InnovaTea® Caffeine
    • 12oz - 150 mg InnovaTea® Caffeine
    • Cognizin® Citicoline
    • N-Acetyl-L-Tyrosine 

NSF Certified for Sport®

    • Third-party tested, and athlete approved, C4 Energy is proudly NSF Certified for Sport®^. This globally recognized certification is our investment that helps athletes of all levels to enjoy our products with confidence.


    Consume one can (16 fl oz) of C4® Smart Energy before dominating exercise... and life.

    Nutrition Label

    Do not consume this product if you are pregnant or nursing. Store in a cool, dry place. Do not freeze. KEEP OUT OF REACH OF CHILDREN

    Try All
    6 Flavors

    Icy Blue Razz

    A blend of 4 tasty berry flavors with a subtly sweet twist

    Black Cherry

    Cherry so smooth, so crisp, so bold!

    Freedom Ice

    Rush of frosty tart blue raspberry that kicks

    Electric Sour

    Juicy and sweet citrus meets pleasantly tart punch

    Cotton Candy

    Sweet, caramellic, jammy, fruity, and berry like

    Peach Mango Nectar

    Perfect tango of a peach and mango