B4
B4 has a SupplementChecker trust score of 85/100, which equates to a grade of A and LOW risk. B4 claims to offer third-party tested supplements, and is also Informed Sport certified, with every batch being tested. This is a positive indicator of product quality and safety.
B4 Trust Summary
- Trust Score
- 85/100 (Very Good)
- Grade
- A
- Risk Level
- LOW
- Third-Party Tested
- Yes (Informed Sport)
- FDA Recalls
- 0
- Adverse Events
- 0
B4 has a trust score of 85/100 (Very Good). The brand is third-party tested by Informed Sport, has no FDA recalls on record and no adverse event reports.
Where to Buy B4
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Red Flags
- ⚠No GMP certification visible
Verified Strengths
- ✓Informed Sport certified — every batch tested
- ✓Claims third-party testing
- ✓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
Clean record — no FDA warnings, recalls, or significant adverse events.
Is B4 Third-Party Tested?
Yes — B4 is Informed Sport certified. This means an independent laboratory has verified that the products' contents, purity, and potency match their label claims.
Is B4 a Good Brand?
B4 scores 85/100 (A) — this is an above-average score indicating a trustworthy brand. B4 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 B4
B4 is a sports nutrition brand operating independently in the US. The founding date of B4 is unknown. They focus on providing supplements for athletes and fitness enthusiasts.
Product Specialization
B4 specializes in the sports nutrition category. While specific product lines are not detailed, they likely offer pre-workout supplements, protein powders, and other performance-enhancing products.
Testing & Certifications Explained
B4 is Informed Sport certified. This means that every batch of their products is tested for banned substances by an independent third-party laboratory. This certification is highly regarded in the sports nutrition industry and provides assurance to athletes that the products are safe for consumption and compliant with anti-doping regulations.
How B4 Compares
Compared to brands like Transparent Labs (trust score 92/100) and Klean Athlete (trust score 88/100), B4's trust score of 85/100 is competitive. Transparent Labs distinguishes itself with full ingredient transparency and readily available lab results, while Klean Athlete also boasts Informed Sport certification. B4's trust score is higher than brands that lack third-party certifications or have a history of FDA violations.
Buying Guidance
Given B4's Informed Sport certification and high trust score, it is a reasonable option for consumers seeking sports nutrition supplements. Purchase B4 products from reputable retailers to ensure authenticity. While B4 publishes no lab results, look for any available batch-specific testing information on the product packaging.
Frequently Asked Questions
Has B4 had any recalls?
Are B4 supplements third-party tested?
Is B4 safe?
Is B4 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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- Trust Score
- 85/100
- Grade
- A
- Risk Level
- LOW
- Third-Party Tested
- Yes
- FDA Recalls
- 0
- Adverse Reports
- 0