Grade: C

MEDIUM RISK

GSK

Item: GSK
Rating: 50
Author: SupplementChecker

GSK has a SupplementChecker.co trust score of 50/100, which translates to a grade of C and a MEDIUM risk level. GSK does not appear to conduct third-party testing on its supplements. Consumers should carefully evaluate the information available before purchasing.

GSK Trust Summary

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

GSK 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 GSK Third-Party Tested?

No — GSK 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 GSK a Good Brand?

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

About GSK

GSK is a US-based supplement brand operating independently. The founding date of GSK is unknown. They offer products in the specialty supplement category.

Product Specialization

GSK specializes in specialty supplements. Specific product types are not widely known.

Testing & Certifications Explained

GSK does not appear to have any third-party certifications. This means there is no readily available independent verification of their products' contents or manufacturing processes. Consumers seeking third-party tested supplements should look for certifications like NSF Certified for Sport or USP Verified.

How GSK Compares

Many supplement brands pursue more rigorous third-party testing than GSK. For example, competitor A may have a trust score of 85/100 and NSF certification, while competitor B has a trust score of 70/100 and publishes all lab results. These brands demonstrate a higher commitment to transparency and quality control compared to GSK.

Buying Guidance

Given GSK's trust score and lack of third-party testing, consumers should exercise caution. Purchase GSK products directly from the manufacturer or authorized retailers to ensure authenticity. Carefully review product labels and ingredient lists before use.

Frequently Asked Questions

Has GSK had any recalls?

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

Are GSK supplements third-party tested?

No — GSK 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 GSK safe?

GSK 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 GSK a good brand?

GSK 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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