Underdog
Underdog has a SupplementChecker.co trust score of 85/100, which is a Grade A and indicates a LOW risk level. Underdog claims third-party testing and has Informed Sport certification, meaning every batch is tested for banned substances. This suggests that Underdog is a good brand focused on safety and quality.
Underdog 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
Underdog 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 Underdog
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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 Underdog Third-Party Tested?
Yes — Underdog is Informed Sport certified. This means an independent laboratory has verified that the products' contents, purity, and potency match their label claims.
Is Underdog a Good Brand?
Underdog scores 85/100 (A) — this is an above-average score indicating a trustworthy brand. Underdog 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 Underdog
Underdog is a sports nutrition brand operating independently in the US. The founding date is unknown. They focus on providing supplements for athletes and fitness enthusiasts.
Product Specialization
Underdog specializes in the sports nutrition category. They likely offer products such as protein powders, pre-workout supplements, and other performance-enhancing formulas.
Testing & Certifications Explained
Underdog's Informed Sport certification means that every batch of their products is tested for banned substances by a third-party laboratory. This certification is highly regarded in the sports nutrition industry and provides assurance to athletes that the products are free from substances prohibited by sporting organizations. This certification makes it more likely that Underdog is safe for consumption.
How Underdog Compares
Compared to brands like Transparent Labs (trust score 92/100, Informed Sport certified, publishes lab results) and Klean Athlete (trust score 88/100, NSF Certified for Sport), Underdog holds a competitive trust score and shares the important Informed Sport certification. However, some competitors may offer greater transparency through published lab results. Another competitor, Optimum Nutrition (trust score 75/100, no certifications), lags behind Underdog in its trust score.
Buying Guidance
Given Underdog's high trust score and Informed Sport certification, it is a reasonable choice for consumers seeking third-party tested supplements. Purchase Underdog products from reputable retailers and always verify the Informed Sport logo on the product packaging to ensure certification.
Frequently Asked Questions
Has Underdog had any recalls?
Are Underdog supplements third-party tested?
Is Underdog safe?
Is Underdog 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