Grade: D

HIGH RISK

GNC AMP

Item: GNC AMP
Rating: 40
Author: SupplementChecker

GNC AMP has a SupplementChecker.co trust score of 40/100, which is a Grade D, indicating a HIGH risk level. GNC AMP does not appear to provide third-party tested supplements, as no certifications are currently visible. Consumers should be aware of this brand's low transparency and lack of independent verification.

GNC AMP Trust Summary

Trust Score: 40/100 (Below Average)
Grade: D
Risk Level: HIGH
Third-Party Tested: No
FDA Recalls: 0
Adverse Events: 8

GNC AMP has a trust score of 40/100 (Below Average). The brand is not third-party tested by NSF, USP, or Informed Sport, has no FDA recalls on record and 8 adverse event reports.

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Red Flags

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

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

Is GNC AMP Third-Party Tested?

No — GNC AMP 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 GNC AMP a Good Brand?

GNC AMP scores 40/100 (D) — this is a below-average score. We recommend considering brands with third-party certifications like NSF or USP. GNC AMP has a clean FDA record with no warnings or recalls. The brand does not currently hold third-party testing certifications.

About GNC AMP

GNC AMP is a supplement brand operating in the US. The founding date of GNC AMP is unknown. GNC AMP is an independent brand. They offer a range of supplements.

Product Specialization

GNC AMP specializes in protein supplements. They are known for various protein powders.

Testing & Certifications Explained

GNC AMP does not have any visible third-party certifications. This means that their products are not independently tested by organizations like NSF, Informed Sport, or USP to verify the ingredients, potency, and absence of contaminants. The absence of these certifications means there is less independent assurance of product quality and safety.

How GNC AMP Compares

Compared to competitors like Klean Athlete (trust score 85/100) and NOW Foods (trust score 78/100), GNC AMP has a significantly lower trust score. Both Klean Athlete and NOW Foods offer a range of third-party tested supplements, providing greater assurance of product quality. Other brands like Optimum Nutrition (trust score 62/100) also score higher, demonstrating a greater commitment to transparency and testing.

Buying Guidance

Given the low GNC AMP trust score, consumers should exercise caution when considering their products. Purchase from reputable retailers and carefully examine product labels. Look for third-party tested supplements from brands with higher trust scores for greater assurance of quality and safety.

Frequently Asked Questions

Has GNC AMP had any recalls?

No — as of 2026, GNC AMP has zero FDA product recalls on record. GNC AMP received a trust score of 40/100 from SupplementChecker.

Are GNC AMP supplements third-party tested?

No — GNC AMP 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 GNC AMP safe?

GNC AMP received a trust score of 40/100 (grade: D, risk level: HIGH). 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 GNC AMP a good brand?

GNC AMP scores 40/100 (grade: D) — 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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