Grade: C

MEDIUM RISK

Simply Slender

Item: Simply Slender
Rating: 50
Author: SupplementChecker

Simply Slender has a SupplementChecker.co trust score of 50/100, which translates to a grade of C and a MEDIUM risk level. Notably, Simply Slender does not appear to conduct third-party testing on its products. This lack of independent verification impacts the overall assessment of whether Simply Slender is a good brand.

Simply Slender Trust Summary

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

Simply Slender 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 Simply Slender Third-Party Tested?

No — Simply Slender 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 Simply Slender a Good Brand?

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

About Simply Slender

Simply Slender is an independent supplement brand with an unknown founding date. The brand is based in the US. They offer products in the specialty supplement category.

Product Specialization

Simply Slender specializes in the specialty supplement category. Specific product types are not widely known.

Testing & Certifications Explained

Simply Slender does not have any visible third-party testing certifications. This means that there is no independent organization verifying the quality, purity, or potency of their products. Consumers should be aware that the absence of third-party testing makes it more difficult to verify product claims and ensure product safety.

How Simply Slender Compares

Compared to competitors in the specialty supplement category, Simply Slender's trust score of 50/100 is lower than brands like Transparent Labs (92/100) and Klean Athlete (88/100), both of which utilize extensive third-party testing. Garden of Life (75/100) also scores higher and has more visible certifications. This difference highlights the importance of third-party testing in establishing brand trust.

Buying Guidance

Given the lack of third-party testing, consumers should exercise caution when considering Simply Slender products. Purchase from reputable retailers and carefully review product labels. Look for any available information on ingredient sourcing or manufacturing practices to supplement the limited data available.

Frequently Asked Questions

Has Simply Slender had any recalls?

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

Are Simply Slender supplements third-party tested?

No — Simply Slender 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 Simply Slender safe?

Simply Slender 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 Simply Slender a good brand?

Simply Slender 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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