Grade: C

MEDIUM RISK

1st Endurance

Item: 1st Endurance
Rating: 50
Author: SupplementChecker

1st Endurance has a SupplementChecker.co trust score of 50/100, which is a Grade C, indicating a MEDIUM risk level. Notably, there are no third-party testing certifications on record for 1st Endurance products. This means consumers cannot independently verify the purity and potency of 1st Endurance supplements.

1st Endurance Trust Summary

Trust Score: 50/100 (Fair)
Grade: C
Risk Level: MEDIUM
Third-Party Tested: No
FDA Recalls: 0
Adverse Events: 0

1st Endurance has a trust score of 50/100 (Fair). The brand is not third-party tested by NSF, USP, or Informed Sport, has no FDA recalls on record and no adverse event reports.

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Red Flags

⚠No third-party testing certifications found
⚠No GMP certification visible

Verified Strengths

✓Clean FDA record — no warnings, recalls, or significant adverse events

Certifications

No certifications on record. This brand has not demonstrated GMP compliance or third-party testing verification.

FDA Record

FDA Warning Letters

Recalls

Adverse Reports

Clean record — no FDA warnings, recalls, or significant adverse events.

Is 1st Endurance Third-Party Tested?

No — 1st Endurance is not currently third-party tested by independent certifiers like NSF, USP, or Informed Sport. No GMP certification was found on record either. We recommend looking for brands with verified third-party testing for the highest confidence in product quality. See our guide to third-party tested supplements.

Is 1st Endurance a Good Brand?

1st Endurance scores 50/100 (C) — this is a below-average score. We recommend considering brands with third-party certifications like NSF or USP. 1st Endurance has a clean FDA record with no warnings or recalls. The brand does not currently hold third-party testing certifications.

About 1st Endurance

1st Endurance is a US-based supplement brand operating independently. The founding date of 1st Endurance is unknown. They focus on providing specialized supplements to athletes and individuals with specific performance goals.

Product Specialization

1st Endurance specializes in specialty supplements designed for endurance athletes. Their product line includes energy gels, electrolyte supplements, and recovery formulas aimed at optimizing athletic performance.

Testing & Certifications Explained

1st Endurance does not have any visible third-party certifications. This means that independent organizations have not verified the quality, purity, or potency of their products. While the company may conduct its own internal testing, the absence of third-party validation reduces consumer confidence. Consumers seeking third-party tested supplements should look for certifications like NSF Certified for Sport or Informed-Sport.

How 1st Endurance Compares

Compared to competitors like Klean Athlete (trust score 85/100, NSF Certified for Sport) and Garden of Life (trust score 78/100, multiple certifications), 1st Endurance lags behind in terms of transparency and independent verification. Another competitor, NOW Foods (trust score 68/100, NPA GMP certified), demonstrates a higher commitment to quality assurance. The absence of certifications impacts the 1st Endurance trust score.

Buying Guidance

Given the lack of third-party testing, consumers should exercise caution when purchasing 1st Endurance products. Purchase directly from the manufacturer or authorized retailers to minimize the risk of counterfeit products. Consumers should research "is 1st Endurance third-party tested" and weigh the risks before purchasing.

Frequently Asked Questions

Has 1st Endurance had any recalls?

No — as of 2026, 1st Endurance has zero FDA product recalls on record. They maintain a clean FDA record with no warning letters or significant adverse event reports. 1st Endurance received a trust score of 50/100 from SupplementChecker.

Are 1st Endurance supplements third-party tested?

No — 1st Endurance supplements are not currently third-party tested by independent certifiers like NSF, USP, or Informed Sport. No independent testing or GMP certification was found on record.

Is 1st Endurance safe?

1st Endurance received a trust score of 50/100 (grade: C, risk level: MEDIUM). This score is calculated from FDA records, third-party certifications, adverse event reports, and transparency practices. No FDA warnings or recalls are on record.

Is 1st Endurance a good brand?

1st Endurance scores 50/100 (grade: C) — this is below average. We recommend looking for brands with third-party certifications like NSF or USP. They do not currently hold third-party testing certifications like NSF, USP, or Informed Sport. No FDA warnings or recalls found.

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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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