Cellucor C4 Ultimate supplement bottle
Cellucor

C4 Ultimate

What We Researched
2 active ingredients analyzed · 2 brand certifications checked · 1 retailer compared · Last updated: Mar 2026
87
Product Score Good
79
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Caffeine 300 mg
Carnosyn Beta-Alanine 3.2 g
Bioavailability Excellent

Absorption Rating

  • Caffeine Good
  • Carnosyn Beta-Alanine Good
Other Ingredients Fair

Fillers & Additives

No inactive ingredient data available.

Efficacy Excellent

Dosage Analysis

  • Caffeine 300 mg Effective
  • Carnosyn Beta-Alanine 3.2 g Effective

Supplement Facts

Ingredient Amount % Daily Value
Caffeine 300 mg
Carnosyn Beta-Alanine 3.2 g

Price Comparison

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
Cellucor

Founded 2002 · Austin, Texas, United States · 349 products · cellucor.com/

Certifications

2 certifications
Nsf Certified For Sport Verified Source
Nsf Gmp Verified Source

Transparency

3 claims
Third Party Testing Claim — Verified Source
Testing Lab Disclosure — Verified Source

Violation History

5 incidents
Lawsuit False advertising of XTEND workout powders as having '0 calories'.2023Source
Prop 65 Lead and Cadmium2018-01-23Source
Lawsuit Deceptive packaging and slack-fill of Cellucor C4 Pre-Workout powders.2018Source
Lawsuit False marketing claims regarding the performance-enhancing benefits of various Cellucor supplements.2016Source
Lawsuit Deceptive advertising of C4 Extreme as a 'dietary supplement' while containing the ingredient DMAA.2012Source
Related Supplements
Frequently Asked Questions
Is Cellucor C4 Ultimate a good supplement?

Cellucor C4 Ultimate received a product quality score of 87/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 2 active ingredients The manufacturer, Cellucor, holds a brand trust score of 79/100 with 2 verified certifications including Nsf Certified For Sport, Nsf Gmp.

What are the ingredients in Cellucor C4 Ultimate?

Cellucor C4 Ultimate contains 2 active ingredients: Caffeine (300 mg), Carnosyn Beta-Alanine (3.2 g). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Cellucor C4 Ultimate safe to take?

Cellucor C4 Ultimate has been analyzed for ingredient safety across all its components. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Cellucor a trustworthy supplement brand?

Cellucor receives a brand trust score of 79/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2002 and headquartered in Austin, Texas, United States, the company offers 349 products in their lineup. They hold 2 verified certifications including Nsf Certified For Sport, Nsf Gmp. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Cellucor has 5 historical regulatory incidents on record, which are factored into the trust score.

Scan Any Supplement Instantly

Download GoodSupp to scan barcodes, check ingredient safety, and find the best supplements for your needs.

Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.