C4 Smart Energy Natural Zero

UPC: 842595119602 MSRP: 34.99 UPC: 842595119534 MSRP: 34.99 UPC: 842595119541 MSRP: 34.99
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$25.99 Regular price
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Plant-based energy

Using InnovaTea® caffeine, naturally derived from green tea

Supports mental focus

Cognizin is a patented citicoline, which is a nutrient that helps support mental focus, attention and recall

Naturally Sweetened

Naturally sweetened with zero sugar and zero compromise on flavor.

No Artificial Flavors

Proudly formulated without artificial colors or flavors

Unlock your mental


Discover another side of Smart

Naturally sweetened with zero sugars, calories, or carbs, and infused with clinically studied ingredients, C4 Smart Energy provides a revitalizing blend of benefits that include increased mental focus paired with energy from naturally derived caffeine. And with incredible C4 taste, no artificial flavors, colors, dyes, or preservatives, this invigorating formula delivers everything you need to unlock your mental potential with zero compromise.

*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

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  • Plant-based energy from green tea
    Using InnovaTea® caffeine, naturally derived from green tea.
  • Supports mental focus
    Cognizin is a nutrient that helps support mental focus, attention and recall.
  • Naturally Sweetened with Zero Sugar
    Zero artificial colors, sweeteners, or preservatives with zero compromise on flavor.

C4 Smart Energy Natural Zero Ingredients

  • 150mg InnovaTea® naturally derived caffeine from Green tea
  • Cognizin®
  • N-Acetyl L-Tyrosine
  • Naturally Sweetened & Naturally Flavored
  • ZERO Sugar, Calories, or Carbs
  • NO Artificial Colors or Dyes
NSF Certified for Sport®
  • Third-party tested, and athlete approved, C4 Smart Energy Natural Zero 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 (12 fl. oz.) of C4® Smart Energy Natural Zero 20-30 minutes before dominating exercise... and/or life.

    Nutrition Label

    Caution: This product is not intended for children or women who are pregnant or nursing. Please consult a licensed, qualified healthcare professional before consuming this product. Do not consume product if you are sensitive to caffeine, wishing to eliminate caffeine from your diet or in combination with caffeine or stimulants from other sources. Do not exceed 3 servings per day. Do not freeze. KEEP OUT OF REACH OF CHILDREN.

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    3 Flavors


    Refreshing berry with a dash of citrus

    Cherry Lime

    Vibrant cherry with a pop of tangy flavor


    Lightly sweet with a bright combo of citrus notes