🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 50% of ingredients have research evidence
A Label Compliance Grade

Product Label

📸

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Label Data

5.7 Gram(s) Serving Size
30 Servings
Other Combinations Product Type
50% Evidence Coverage

Supplement Facts — Evidence Check

CarnoSyn
2 Gram(s)
NitraMax
1 Gram(s)
1 Gram(s)
📊 Market median: 5.0mg (298 products) 📚 701 studies (Tier A: 5, B: 123)
This product: 1mg
200 mg
📊 Market median: 180.0mg (239 products) 📚 43 studies (Tier A: 1, B: 19)
This product: 200mg UL 400mg
📊 Market median: 500.0mg (223 products) 📚 22 studies (Tier A: 0, B: 1)
This product: 200mg
50 mcg
📊 Market median: 0.15mg (41 products)
Median 0.15mg This product: 0.05mg

Other Ingredients

Silicon Dioxide Citric Acid Calcium Silicate Fruit & Vegetable Juice, Powder Sucralose Natural Flavors Acesulfame Potassium Malic Acid

Label Claims — Verification

Nutrient
All Other
Structure/Function
All Other (98% of products) Structure/Function (78% of products) Nutrient (56% of products)

Target Groups

Adult (18 - 50 Years) Women (not pregnant or lactating)

Product Information

📋 Directions for Use

Suggested use: Take one serving (approx. 1 level scoop) of C4 Extreme mixed with 6 fl. oz. of water, 20-30 minutes before training.

⚠️ Warnings & Precautions

Some individuals may experience a harmless tingling sensation, which is attributable to Beta-Alanine. Use only as directed.

Warning: This product is only intended for healthy adults, 18 years of age or older.

Do not use if pregnant, nursing, currently taking PDE5 inhibitors or nitrates for chest pain. Before taking this product, consult a licensed, qualified, health care professional, especially if you are taking any other dietary supplement, prescription drug or over-the-counter medication; or if, you suspect you have or have been treated for, diagnosed with or have a family history of, any medical condition.

This product contains caffeine and should not be used in combination with caffeine or stimulants from other sources. Discontinue use 2 weeks prior to surgery. Immediately discontinue use and contact a medical doctor if you experience any adverse reaction to this product. Do not use this product continuously for more than 8 weeks. Do not use if safety seal is broken or missing.

Keep out of reach of children.

🧪 Formulation Notes

C4 Extreme Performance ID 200 mg Caffeine explosive energy 2 g Carnosyn Beta-alanine muscular endurance 1 g NitraMx (N03-C) Citrulline Nitrate nitric oxide booster 1 g N03-T Creatine Nitrate 2 in 1 creatine & N.O. booster

Explosive pre-workout performance

Fruit punch naturally flavored

Clean. Clear. Evolved.

Clean No artificial dyes. No artificial flavors.

Clear Fully transparent label.

No proprietary blends.

Evolved Innovative ingredients. Enhanced formulas.

Made in the U.S.A using strategically sourced domestic and imported ingredients and components.

Additional Information

Follow @cellucor for giveaways and updates

#1 America's Best-selling pre-workout brand Based on cumulative sales of all C4 branded products from 2010 to the present.

Store in a cool, dry place. This product is sold by weight, not volume. The density of the powder varies, and significant settling of powder may occur during shipping and handling. This product contains the servings indicated when measured by weight.

Product Details

UPC / SKU 8 42595 11217 7
DSLD Entry Date 2024-12-21
Product Type Other Combinations
Form Powder
Brand Cellucor
DSLD ID 322568
Data Updated 2026-04-11

Research Evidence

50 Research Sources
47 Avg Quality Score
28 Rct
13 Clinical Trial
5 Guideline
4 Systematic Review
A Using a Novel Consensus-Based Chemoinformatics Approach to Predict ADMET Properties and Druglikeness of Tyrosine Kinase Inhibitors.
Guideline International journal of molecular sciences 2025
B Australia and New Zealand consensus statement on the cardiovascular management of patients with chronic lymphocytic leukaemia treated with Bruton's tyrosine kinase inhibitors.
Guideline Internal medicine journal 2025
B Branched-chain amino acid supplementation for improving growth and development in term and preterm neonates
Systematic Review The Cochrane database of systematic reviews 2020
B [Clinical practice guideline on anaplastic lymphoma kinase-tyrosine kinase inhibitors for non-small cell lung cancer (2025 edition)].
Guideline Zhonghua zhong liu za zhi [Chinese journal of oncology] 2025
B [Chinese expert consensus on epidermal growth factor receptor tyrosine kinase inhibitors for the treatment of non-small cell lung cancer (2025 edition)].
Guideline Zhonghua yi xue za zhi 2025
B Consensus Guideline for the Diagnosis and Treatment of Tyrosine Hydroxylase (TH) Deficiency.
Guideline Journal of inherited metabolic disease 2025
B Baseline-dependent effect of dopamine's precursor L-tyrosine on working memory gating but not updating
Rct Cognitive, affective & behavioral neuroscience 2020
B Effect of Amino Acid Supplementation on Iron Regulation after Endurance Exercise
Rct Nutrients 2023
C Attenuating Muscle Damage Biomarkers and Muscle Soreness After an Exercise-Induced Muscle Damage with Branched-Chain Amino Acid (BCAA) Supplementation: A Systematic Review and Meta-analysis with Meta-regression
Systematic Review Sports medicine - open 2024
C The Effects of Green Tea Amino Acid L-Theanine Consumption on the Ability to Manage Stress and Anxiety Levels: a Systematic Review
Systematic Review Plant foods for human nutrition (Dordrecht, Netherlands) 2020
View all evidence for Tyrosine →

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