Grade: B+

MEDIUM RISK

Klean Athlete

Item: Klean Athlete
Rating: 70
Author: SupplementChecker

Part of Nestle Health Science

https://www.kleanathlete.com Est. 2012 (14 years)

Klean Athlete has a SupplementChecker.co trust score of 70/100, earning a grade of B+ and a risk level of MEDIUM. No third-party testing certifications were found. While Klean Athlete is an established brand, consumers should be aware of the lack of independent verification of their products.

Klean Athlete Trust Summary

Trust Score: 70/100 (Good)
Grade: B+
Risk Level: MEDIUM
Third-Party Tested: No
FDA Recalls: 0
Adverse Events: 0
Years in Business: 14 years
GMP Certified: Yes

Klean Athlete has a trust score of 70/100 (Good). The brand is not third-party tested by NSF, USP, or Informed Sport, has no FDA recalls on record and no adverse event reports and has been in business for 14 years.

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Red Flags

⚠No third-party testing certifications found

Verified Strengths

✓Established brand — operating since 2012 (14 years)
✓Clean FDA record — no warnings, recalls, or significant adverse events

Certifications

GMP Certified

GMP certification ensures manufacturing quality standards are met, but does not verify that product contents match the label through independent testing. Look for NSF, USP, or Informed Sport certifications for third-party verified products.

FDA Record

FDA Warning Letters

Recalls

Adverse Reports

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

Is Klean Athlete Third-Party Tested?

No — Klean Athlete is not currently third-party tested by independent certifiers like NSF, USP, or Informed Sport. They do hold GMP certification, which ensures manufacturing quality but does not independently verify product contents. 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 Klean Athlete a Good Brand?

Klean Athlete scores 70/100 (B+) — this is an average score. There may be room for improvement in testing transparency or certifications. Klean Athlete has a clean FDA record with no warnings or recalls. The brand does not currently hold third-party testing certifications.

About Klean Athlete

Klean Athlete is a supplement brand founded in 2012 and owned by Nestle Health Science. The company focuses on providing nutritional support for athletes. Klean Athlete aims to offer clean and effective supplements, but it's important for consumers to assess their safety and quality claims.

Product Specialization

Klean Athlete specializes in a range of supplements, including protein powders, vitamins, electrolytes, and recovery products. They offer various protein formulations, such as whey and plant-based options, as well as multivitamins and targeted supplements like creatine and glutamine.

Testing & Certifications Explained

Klean Athlete is GMP certified, indicating adherence to good manufacturing practices. However, the brand lacks third-party testing certifications. This means that an independent organization does not verify the contents and purity of their supplements. Consumers should be aware that the absence of third-party testing means there is less independent assurance of product quality.

How Klean Athlete Compares

Compared to competitors like Garden of Life (trust score 92/100) and NOW Foods (trust score 85/100), which both have third-party testing certifications, Klean Athlete's trust score is lower due to the lack of such certifications. Other brands like Thorne Research also emphasize rigorous third-party testing. Consumers often prioritize brands with verifiable quality and safety assurances when choosing supplements.

Buying Guidance

Consumers interested in Klean Athlete products should carefully consider the absence of third-party testing. It's advisable to purchase directly from Klean Athlete or authorized retailers to ensure product authenticity. Always review product labels and consult with a healthcare professional before starting any new supplement regimen. Consider whether third-party tested supplements are a better fit for your needs.

Frequently Asked Questions

Has Klean Athlete had any recalls?

No — as of 2026, Klean Athlete has zero FDA product recalls on record. They maintain a clean FDA record with no warning letters or significant adverse event reports. Klean Athlete received a trust score of 70/100 from SupplementChecker.

Are Klean Athlete supplements third-party tested?

No — Klean Athlete supplements are not currently third-party tested by independent certifiers like NSF, USP, or Informed Sport. They do have GMP (Good Manufacturing Practice) certification, which ensures manufacturing quality but does not independently verify product contents.

Is Klean Athlete safe?

Klean Athlete received a trust score of 70/100 (grade: B+, 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 Klean Athlete a good brand?

Klean Athlete scores 70/100 (grade: B+) — this is an average score. There may be room for improvement in testing transparency or certifications. 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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