Cellucor C4
Part of Nutrabolt
**** Cellucor C4 is a well-established pre-workout and energy supplement brand founded in 2002 and owned by Nutrabolt. The brand holds Informed Sport certification for batch testing but lacks visible GMP certification on their products. C4 maintains a clean FDA record with zero warning letters, recalls, or adverse event reports over its 24-year operating history. **
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
FDA Record
Clean record — no FDA warnings, recalls, or significant adverse events.
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 FDA 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, NSF.org, USP.org, and publicly available brand information. Last updated: 3/20/2026.
Quick Facts
- Trust Score
- 95/100
- Grade
- A+
- Risk Level
- LOW
- Third-Party Tested
- Yes
- FDA Recalls
- 0
- Adverse Reports
- 0
- Founded
- 2002