Thirdzy
Thirdzy has a SupplementChecker.co trust score of 85/100, which is a grade of A and indicates a LOW risk level. Thirdzy claims to use third-party testing and is Informed Sport certified, meaning every batch is tested. This certification is a strong indicator of product quality and safety.
Thirdzy 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
Thirdzy 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 Thirdzy
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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 Thirdzy Third-Party Tested?
Yes — Thirdzy is Informed Sport certified. This means an independent laboratory has verified that the products' contents, purity, and potency match their label claims.
Is Thirdzy a Good Brand?
Thirdzy scores 85/100 (A) — this is an above-average score indicating a trustworthy brand. Thirdzy 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 Thirdzy
Thirdzy is a US-based sports nutrition brand operating independently. The founding date of Thirdzy is unknown. They develop and market supplements aimed at athletes and fitness enthusiasts.
Product Specialization
Thirdzy specializes in the sports nutrition category. While specific product types are not detailed, this category typically includes protein powders, pre-workout supplements, and performance enhancers.
Testing & Certifications Explained
Thirdzy 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 valued in the sports nutrition industry and provides assurance to athletes and consumers that the products are free from contaminants that could lead to positive drug tests or health risks. This makes it more likely that Thirdzy is a good brand.
How Thirdzy Compares
Compared to other sports nutrition brands, Thirdzy's trust score of 85 is relatively high, largely due to its Informed Sport certification. For example, a competitor without third-party certifications might have a lower score. Other brands like Klean Athlete (often Informed Sport certified) may have similar scores, while brands that lack comprehensive testing and transparency may score lower. Consumers often search "is Thirdzy third-party tested" to compare it to brands with less clear testing practices.
Buying Guidance
Given Thirdzy's high trust score and Informed Sport certification, it is generally a trustworthy brand. Consumers can purchase Thirdzy products from authorized retailers. Look for the Informed Sport logo on the product packaging to confirm certification.
Frequently Asked Questions
Has Thirdzy had any recalls?
Are Thirdzy supplements third-party tested?
Is Thirdzy safe?
Is Thirdzy 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