Grade: D

HIGH RISK

Zantrex

Item: Zantrex
Rating: 40
Author: SupplementChecker

Last reviewed: April 14, 2026

Zantrex has a SupplementChecker trust score of 50/100, a Grade C, indicating a MEDIUM risk level. Notably, there are no third-party testing certifications on record for Zantrex products. Consumers should be aware of this when considering whether Zantrex is a good brand for their needs.

Zantrex Trust Summary

Trust Score: 40/100 (Below Average)
Grade: D
Risk Level: HIGH
Third-Party Tested: No
FDA Recalls: 0
Adverse Events: 5

Zantrex 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 5 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 Zantrex Third-Party Tested?

No — Zantrex 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 Zantrex a Good Brand?

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

About Zantrex

Zantrex is a specialty supplement brand operating independently in the US. The company's founding date is unknown. Zantrex focuses on developing and marketing products in the specialty supplement space.

Product Specialization

Zantrex specializes in specialty supplements. Specific product types that Zantrex is known for are not specified.

How Zantrex Compares

Compared to other brands in the specialty supplement category, Zantrex's trust score of 50/100 is lower than brands with verified third-party testing. For example, a brand like Klean Athlete (trust score above 80) has NSF Certified for Sport certification. Another competitor, Garden of Life, has a higher trust score and boasts certifications like USDA Organic and Non-GMO Project Verified, indicating a greater commitment to independent verification.

Testing & Certifications Explained

Zantrex does not appear to have any third-party testing certifications. This means that independent organizations are not verifying the quality, purity, or potency of Zantrex products. Consumers should be aware that the absence of these certifications makes it more difficult to confirm that the products contain the ingredients listed on the label and are free from contaminants.

Buying Guidance

Given the lack of third-party testing, consumers should exercise caution when purchasing Zantrex products. It is advisable to purchase from reputable retailers and carefully examine product labels. Consider seeking brands with more transparent testing and certification practices if independent verification is a priority.

Frequently Asked Questions

Has Zantrex had any recalls?

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

Are Zantrex supplements third-party tested?

No — Zantrex 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 Zantrex safe?

Zantrex 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 Zantrex a good brand?

Zantrex 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.

See our full scoring methodology and data sources for how each signal is measured.

All data sourced from FDA.gov, Health Canada (LNHPD / recalls-rappels), NSF.org, USP.org, and publicly available brand information. Last updated: 5/1/2026.

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