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C4 Smart Energy

Surprisingly smart for a pre-workout brand. Cognizin citicoline at 250mg plus tyrosine is a legit cognitive stack on top of 200mg natural caffeine. Missing L-theanine to smooth the caffeine edge, but the nootropic additions actually earn their spots.

7.2/10
VERY GOOD

Caffeine + Cognizin citicoline + N-Acetyl tyrosine is a legit focus stack. 200mg caffeine from natural tea. Better than most energy drinks because the nootropic additions actually do something.

5 ingredientsPowder20 servings
We'd recommend this
Evidence
7.0
Dosing
7.0
Synergy
8.0
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Whenmorning or pre-workout

Caffeine content. Don't use after 2pm.

Foodwith or without food

Dissolves in water. Caffeine absorbs faster on empty stomach.

SafetyAll clear

200mg caffeine. Don't combine with other stimulants.

ResearchStrong evidence

Cognizin citicoline has clinical trials for cognitive function. Tyrosine for stress performance is well-studied.

What We Like

  • Cognizin citicoline at 250mg is a properly dosed nootropic.
  • Natural caffeine from tea (not synthetic).
  • N-Acetyl-L-Tyrosine supports dopamine under stress.
  • Zero sugar.

Watch Out For

  • 200mg caffeine is moderate-high (1.5 cups of coffee).
  • Only 20 servings.
  • Missing L-theanine to smooth caffeine.
  • Brand known for pre-workout, not nootropics.

Ingredient Breakdown

1 clinical1 adequate1 underdosed
Clinical Adequate Underdosed Overdosed|Bar = % of clinical dose
IngredientDoseStatusvs. Clinical
Caffeine10.0

from InnovaTea Natural Caffeine

200 mgCLINICAL
100%
200 mg

of 200mg

CLINICAL
100%
Cognizin Citicoline
250 mg
250 mg
N-Acetyl-L-Tyrosine8.0
200 mg
200 mg
Niacin10.0
30 mgADEQUATE
60%
30 mg

of 50mg

ADEQUATE
60%
Vitamin B1210.0

Methylcobalamin

35 mcgUNDERDOSED
4%
35 mcg

of 1000mcg

UNDERDOSED
4%
In our database (click to learn more) Not yet reviewed

Our Analysis

Best For

People wanting energy + focus, not just energy.Pre-workout users wanting cognitive boost.Those who like C4 brand but want less jitters.

Skip This If

Caffeine-sensitive individuals.Those already taking citicoline or other nootropics.

Time to Feel

15-30 minutes

Value

FAIR

How to take: Cycle caffeine 4 weeks on, 1 week off to maintain sensitivity.

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