🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 30% of ingredients have research evidence
A Label Compliance Grade

Product Label

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Label Data

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

Supplement Facts — Evidence Check

Calories
5 Calorie(s)
Total Carbohydrate
1 Gram(s) (1% DV)
35 mcg (2% DV)
📊 Market median: 10.0mg (1576 products) 📚 113 studies (Tier A: 3, B: 35)
RDA 1.3mg This product: 0.035mg UL 100mg
35 mcg (1458% DV)
📊 14.6× RDA — above typical dose 📚 138 studies (Tier A: 1, B: 44)
RDA 0.0024mg This product: 0.035mg
Calcium
22 mg (2% DV)
12 mg (3% DV)
📊 Market median: 4002.0mg (1 products) 📚 20 studies (Tier A: 0, B: 2)
This product: 12mg
Sodium
60 mg (3% DV)
Potassium
20 mg (1% DV)
C4 Sport Performance Blend
4.9 Gram(s)
C4 Sport Energy Blend
1.135 Gram(s)

Other Ingredients

Malic Acid Polydextrose Citric Acid Artificial Flavors Silicon Dioxide Calcium Silicate Sucralose Acesulfame Potassium FD&C Red #40

Label Claims — Verification

All Other
Structure/Function
All Other (99% of products) Structure/Function (89% 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 each serving (approx. 1 scoop) of C4 Sport, mixed with with 6-8 fl. oz. of water 20-30 minutes before training. During your workout, it is recommended that you drink plenty of water. Some individuals may experience a harmless tingling sensation, which is attributable to beta-alanine. Use only as directed.

⚠️ Warnings & Precautions

Warning: This product is only intended to be consumed by healthy adults, 18 years of age or older.

Do not use this product if you are pregnant, nursing, currently taking PDE-5 inhibitors or nitrates for chest pain. Before taking this product, consult a licensed, qualified, healthcare 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, including but not limited to: high or low blood pressure, diabetes, anxiety, cardiovascular, psychiatric or seizure disorders, cardiac arrhythmia, stroke, heart, liver, kidney, or thyroid disease, or difficulty urinating due to prostate enlargement.

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 if safety seal is broken or missing.

Keep out of reach of children.

🧪 Formulation Notes

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

Pre-workout Explosive energy & performance

Watermelon Artificially flavored

Pre-Workout energy C4 Sport, taken 30 minutes prior to exercise, provides a boost of energy and focus to maximize your workout.

Additional Information

NSF Certified Sport

The NSF Certified for Sport program helps athletes, coaches and trainers make more informed decisions when choosing sports supplements. The program is recognized by the NFL, NFL Players Association, MLB, MLB Players Association, PGA, LPGA and Canadian Centre for Ethics in sports. The NSF certification mark on our products helps athletes of all levels buy our supplements with confidence. Certified supplements must meet rigorous standards that include comprehensive lab testing an extensive evaluation of the manufacturing process to ensure contaminated substances or hidden ingredients are not added to a product.

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.

America's #1 pre-workout brand Based on sales of C4 brand products in the U.S.A. from 2014 to present

Cellucor sport series system 1Pre 2 Post 3 All day Post-workout recovery Whey Sport, consumed within 30 minutes post-workout provides 30g of protein to help you recover quickly and build muscle. And, it tastes great too! All-day recovery with hydration BCAA Sport should be consumed all day for ongoing muscle recovery and hydration to maximize your workout results.

Follow @CELLUCOR Facebook Twitter Instagram for giveaways and updates

Product Details

UPC / SKU 8 10390 02917 4
DSLD Entry Date 2023-06-22
Product Type Other Combinations
Form Powder
Brand Cellucor
DSLD ID 291628
Data Updated 2026-04-11

Research Evidence

237 Research Sources
53 Avg Quality Score
83 Meta Analysis
74 Systematic Review
45 Rct
29 Clinical Trial
2 Guideline
2 Regulatory Source
1 Openfda Safety
A Associations between serum Homocysteine, vitamin B9, and vitamin B12 levels and the formation of intracranial Aneurysms: A systematic review and meta-analysis
Meta Analysis Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia 2025
A Intake of vitamin B6, folate, and vitamin B12 and risk of coronary heart disease: a systematic review and dose-response meta-analysis of prospective cohort studies
Meta Analysis Critical reviews in food science and nutrition 2019
A Oral vitamin B12 versus intramuscular vitamin B12 for vitamin B12 deficiency
Systematic Review The Cochrane database of systematic reviews 2018
A Effects of Vitamin B12 Supplementation on Cognitive Function, Depressive Symptoms, and Fatigue: A Systematic Review, Meta-Analysis, and Meta-Regression
Meta Analysis Nutrients 2021
A Efficacy of different routes of vitamin B12 supplementation for the treatment of patients with vitamin B12 deficiency: A systematic review and network meta-analysis
Systematic Review Irish journal of medical science 2024
B Helicobacter pylori infection and micronutrient deficiency in pregnant women: a systematic review and meta-analysis
Meta Analysis BMJ open gastroenterology 2020
B Vitamin B12 supplementation during pregnancy for maternal and child health outcomes
Systematic Review The Cochrane database of systematic reviews 2024
B A comprehensive review and meta-regression analysis of randomized controlled trials examining the impact of vitamin B12 supplementation on homocysteine levels
Meta Analysis Nutrition reviews 2024
B Relationship between vitamin B12 levels and motor development: A systematic review
Systematic Review Clinical nutrition ESPEN 2024
B Vitamin B12, folate, and homocysteine in metabolic syndrome: a systematic review and meta-analysis
Meta Analysis Frontiers in endocrinology 2023
View all evidence for Vitamin B12 →

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