Grade: C

MEDIUM RISK

Natural Factors Stress-Relax

Item: Natural Factors Stress-Relax
Rating: 50
Author: SupplementChecker

Natural Factors Stress-Relax has a Trust Score of 50/100, a grade of C, and a MEDIUM risk level. Natural Factors Stress-Relax is not clearly third-party tested, as no certifications are currently visible. The brand has a clean FDA record, with no warning letters or recalls.

Natural Factors Stress-Relax Trust Summary

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

Natural Factors Stress-Relax 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 Natural Factors Stress-Relax Third-Party Tested?

No — Natural Factors Stress-Relax 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 Natural Factors Stress-Relax a Good Brand?

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

About Natural Factors Stress-Relax

Natural Factors Stress-Relax is a supplement brand operating independently in the US. The founding date is unknown. They offer a range of supplements.

Product Specialization

Natural Factors Stress-Relax specializes in supplements across several categories, including fish oil, herbal remedies, and protein products. They are known for products designed to promote relaxation and stress relief.

Testing & Certifications Explained

Natural Factors Stress-Relax does not have any third-party testing certifications visible in our research. This means there's no independent verification of their products' ingredients, purity, or potency. Consumers should be aware that the absence of third-party testing increases the risk of contamination or inaccurate labeling. Consumers seeking third-party tested supplements should look for brands with certifications from organizations like USP, NSF, or Informed-Sport.

How Natural Factors Stress-Relax Compares

Compared to competitors like NOW Foods (Trust Score: 75/100, with GMP certification) and Thorne Research (Trust Score: 90/100, NSF Certified for Sport), Natural Factors Stress-Relax lags behind in terms of trust and transparency. Garden of Life (Trust Score: 65/100, with multiple certifications) also demonstrates a stronger commitment to third-party testing. These competitors offer greater assurance of product quality through independent verification.

Buying Guidance

Given the lack of third-party testing, consumers should exercise caution when purchasing Natural Factors Stress-Relax products. Purchase from reputable retailers and carefully examine product labels. Consider seeking brands with more transparent testing and certification practices for greater assurance of product quality and safety.

Frequently Asked Questions

Has Natural Factors Stress-Relax had any recalls?

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

Are Natural Factors Stress-Relax supplements third-party tested?

No — Natural Factors Stress-Relax 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 Natural Factors Stress-Relax safe?

Natural Factors Stress-Relax 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 Natural Factors Stress-Relax a good brand?

Natural Factors Stress-Relax 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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