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#5 in Energy Supplements Third-Party Tested

Cellucor C4 Smart Energy

by Cellucor

"Nootropic energy powder with 200mg natural caffeine, InnovaTea, and Cognizin citicoline"

Amazon Rating
4.4/5
Reviews
12,000+
Price Range
$22-28
Servings
20 servings
Informed Sport CertifiedGMP Certified
Our Editorial Rating
7.8
Good
FormPowder
SubcategoryFunctional Energy Drink
View on Amazon

Overview

C4 Smart Energy bridges the gap between pre-workout and nootropic, combining 200mg of natural caffeine from InnovaTea (tea leaf extract) with Cognizin citicoline for cognitive enhancement. Unlike traditional C4 pre-workouts, Smart Energy is designed for all-day use — work, study, or light training — not just the gym. The formula includes N-Acetyl L-Tyrosine for focus under stress and niacin for energy metabolism. Cellucor has expanded the C4 brand from pure pre-workout into a lifestyle energy brand competing with energy drinks.

Key Ingredients

IngredientAmount
InnovaTea Natural Caffeine200 mg
Cognizin Citicoline250 mg
N-Acetyl L-TyrosineIncluded
Niacin (B3)30 mg

Pros & Cons

What We Like

  • Natural caffeine from tea (InnovaTea)
  • Cognizin citicoline for cognitive function
  • Moderate caffeine (200mg)
  • Versatile — gym, work, or study
  • Zero sugar, zero calories

What Could Be Better

  • Only 20 servings per container
  • No pump or performance ingredients
  • Not a replacement for a full pre-workout
  • Some flavors are overly sweet

Who Is This For?

Best For

  • All-day energy and focus
  • Students and knowledge workers
  • Those wanting cleaner energy than energy drinks
  • Light workout energy

Not Ideal For

  • Those wanting a full pre-workout
  • Caffeine-sensitive individuals
  • Those wanting pump/performance ingredients

Our Verdict

7.8/10 — Good

C4 Smart Energy is the thinking person's energy supplement. The combination of natural caffeine with Cognizin citicoline provides clean, focused energy without the crash. A great alternative to energy drinks for work, study, or light training.

Alternatives to Consider