Grade: D

HIGH RISK

XS

Item: XS
Rating: 40
Author: SupplementChecker

Okay, here's the content for the XS brand profile page on SupplementCheck, following your specified format: **** XS is a protein supplement brand operating independently. The brand has no third-party certifications or GMP certification visible. While there are no FDA warning letters or recalls on record, there are six FDA adverse event reports associated with XS products. **

XS Trust Summary

Trust Score: 40/100 (Below Average)
Grade: D
Risk Level: HIGH
Third-Party Tested: No
FDA Recalls: 0
Adverse Events: 6

XS 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 6 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 XS Third-Party Tested?

No — XS 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 XS a Good Brand?

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

About XS

XS is a supplement brand in the dietary supplement industry. The company specializes in protein powders and sports nutrition. XS has a trust score of 40/100 (Grade D), which may indicate areas for improvement in safety or transparency.

Product Specialization

XS specializes in protein supplements including whey protein isolate, casein, and plant-based protein powders. Their protein products are designed to support muscle building, recovery, and daily protein intake goals for athletes and fitness enthusiasts.

Testing & Certifications Explained

XS does not appear to have third-party testing certifications from recognized organizations like NSF, USP, or Informed Sport. This means their supplements have not been independently verified for purity, potency, or banned substances. Consumers should be aware that ingredient quality and label accuracy are not externally validated.

How XS Compares

Within the protein powder market, XS competes with established brands like Optimum Nutrition, Dymatize, and Isopure. Their trust score of 40/100 shows room for improvement compared to top-tier competitors in third-party testing and regulatory compliance.

Buying Guidance

Given XS's lower trust score, consumers should exercise caution and consider alternatives with stronger safety records. If purchasing, verify ingredient sources, check for recent lab testing, and consult healthcare providers.

Frequently Asked Questions

Has XS had any recalls?

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

Are XS supplements third-party tested?

No — XS 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 XS safe?

XS 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 XS a good brand?

XS 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: 4/4/2026.

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