Grade: C

MEDIUM RISK

Slender FX

Item: Slender FX
Rating: 50
Author: SupplementChecker

Slender FX has a SupplementChecker.co trust score of 50/100, a grade of C, indicating a MEDIUM risk level. Slender FX is not clearly third-party tested, as we found no certifications on record. Consumers should consider this when evaluating if Slender FX is a good brand for their needs.

Slender FX Trust Summary

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

Slender FX 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 Slender FX Third-Party Tested?

No — Slender FX 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 Slender FX a Good Brand?

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

About Slender FX

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

Product Specialization

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

Testing & Certifications Explained

Slender FX does not have any third-party testing certifications visible to SupplementChecker.co. This means that an independent organization has not verified the quality, purity, or potency of Slender FX products. Consumers seeking third-party tested supplements may want to consider brands with certifications from organizations like USP, NSF, or Informed Sport.

How Slender FX Compares

Compared to other brands in the specialty supplement category, Slender FX's trust score of 50/100 is lower than brands with established third-party testing. For example, a brand like Klean Athlete (trust score above 80) has NSF Certified for Sport certification. Another competitor, NOW Foods (trust score in the 70s), publishes lab results for many of its products.

Buying Guidance

Given the lack of third-party testing, consumers should exercise caution when purchasing Slender FX products. Purchase from reputable retailers and carefully examine product labels for complete ingredient information. Consider researching Slender FX reviews from multiple sources before making a purchase.

Frequently Asked Questions

Has Slender FX had any recalls?

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

Are Slender FX supplements third-party tested?

No — Slender FX 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 Slender FX safe?

Slender FX 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 Slender FX a good brand?

Slender FX 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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