Cellucor C4
Part of Nutrabolt
Cellucor C4 has a SupplementChecker trust score of 95/100, which is Grade A+ and indicates a LOW risk level. Cellucor C4 claims to conduct third-party testing and is Informed Sport certified, with every batch tested. This certification is a strong indicator of product quality and safety.
Cellucor C4 Trust Summary
- Trust Score
- 95/100 (Excellent)
- Grade
- A+
- Risk Level
- LOW
- Third-Party Tested
- Yes (Informed Sport)
- FDA Recalls
- 0
- Adverse Events
- 3
- Years in Business
- 24 years
Cellucor C4 has a trust score of 95/100 (Excellent). The brand is third-party tested by Informed Sport, has no FDA recalls on record and 3 adverse event reports and has been in business for 24 years.
Where to Buy Cellucor C4
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Red Flags
- ⚠No GMP certification visible
Verified Strengths
- ✓Informed Sport certified — every batch tested
- ✓Claims third-party testing
- ✓Established brand — operating since 2002 (24 years)
- ✓Clean FDA record — no warnings, recalls, or significant adverse events
Certifications
Third-party testing means an independent laboratory has verified this product's contents, purity, and potency match what's on the label.
FDA Record
Is Cellucor C4 Third-Party Tested?
Yes — Cellucor C4 is Informed Sport certified. This means an independent laboratory has verified that the products' contents, purity, and potency match their label claims.
Is Cellucor C4 a Good Brand?
Cellucor C4 scores 95/100 (A+) — this is an above-average score indicating a trustworthy brand. Cellucor C4 has a clean FDA record with no warnings or recalls. The brand holds third-party certifications (Informed Sport certified), which is a strong quality indicator.
About Cellucor C4
Cellucor C4, founded in 2002, is a US-based supplement brand owned by Nutrabolt. Cellucor C4 is known for its range of sports nutrition products and is a prominent brand in the pre-workout and energy supplement market.
Product Specialization
Cellucor C4 specializes in pre-workout and energy supplements. Their flagship product is the C4 pre-workout, available in various formulations and flavors. They also offer energy drinks and other performance-enhancing products.
Testing & Certifications Explained
Cellucor C4 products are Informed Sport certified. This means that every batch of their certified products is tested by LGC, a third-party laboratory, for banned substances. This certification is highly valued by athletes and consumers who need to be certain that their supplements do not contain any prohibited ingredients. This provides a high level of assurance regarding product safety and quality.
How Cellucor C4 Compares
Compared to other pre-workout brands, Cellucor C4's trust score of 95/100 is relatively high. For example, Optimum Nutrition, another popular brand, has a similar trust score and also offers Informed Sport certified products. However, some competitors like Transparent Labs may have higher transparency standards by publishing lab results, though their trust score may vary. Consumers often consult Cellucor C4 reviews to compare products.
Buying Guidance
Given Cellucor C4's high trust score and Informed Sport certification, it is a reasonable choice for consumers seeking pre-workout and energy supplements. Purchase Cellucor C4 products from reputable retailers to ensure authenticity. Look for the Informed Sport logo on the product packaging to confirm certification.
Frequently Asked Questions
Has Cellucor C4 had any recalls?
Are Cellucor C4 supplements third-party tested?
Is Cellucor C4 safe?
Is Cellucor C4 a good brand?
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How We Calculated This Score
Every brand starts with a baseline score of 70/100.
Points added for: Third-party certifications (NSF +15, USP +15, Informed Sport +10), publishing lab results (+10), clean regulatory record (+10), 10+ years in business (+10), organic certification (+5).
Points deducted for: FDA warning letters (-25), product recalls (-20), high adverse events (-15), no third-party testing (-15), proprietary blends (-10), no GMP (-10).
Score is capped at 0-100. Grade and risk level are derived from the final score.
All data sourced from FDA.gov, Health Canada (LNHPD / recalls-rappels), NSF.org, USP.org, and publicly available brand information. Last updated: 4/9/2026.
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See the best third-party tested supplements →Quick Facts
- Trust Score
- 95/100
- Grade
- A+
- Risk Level
- LOW
- Third-Party Tested
- Yes
- FDA Recalls
- 0
- Adverse Reports
- 3
- Founded
- 2002