Grade: C

MEDIUM RISK

Six Star Muscle

Item: Six Star Muscle
Rating: 50
Author: SupplementChecker

Six Star Muscle has a SupplementChecker.co trust score of 50/100, which is a Grade C, indicating a MEDIUM risk level. Notably, Six Star Muscle does not appear to have any third-party testing certifications to verify the quality of its products. This is a key consideration when determining if Six Star Muscle is a good brand for your needs.

Six Star Muscle Trust Summary

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

Six Star Muscle 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 Six Star Muscle Third-Party Tested?

No — Six Star Muscle 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 Six Star Muscle a Good Brand?

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

About Six Star Muscle

Six Star Muscle is a supplement brand operating independently in the specialty supplement category. The company's founding date is unknown. They offer a range of products aimed at athletes and fitness enthusiasts.

Product Specialization

Six Star Muscle specializes in sports nutrition supplements. Their product line includes protein powders, pre-workout formulas, creatine supplements, and other products designed to enhance athletic performance and muscle growth.

Testing & Certifications Explained

Six Star Muscle does not appear to have any third-party testing certifications. This means that no independent organization has verified the quality, purity, or potency of their products. Consumers seeking assurances of product quality often look for certifications like NSF Certified for Sport or Informed-Sport, which involve rigorous testing and auditing processes. The absence of these certifications means consumers must rely solely on the brand's own claims about its products.

How Six Star Muscle Compares

Compared to other brands in the sports nutrition category, Six Star Muscle's trust score falls in the middle range. For example, a brand like Klean Athlete (trust score 85/100) has a much higher score due to its NSF Certified for Sport certification. Optimum Nutrition (trust score 65/100) also scores higher, partly due to greater transparency. These brands offer third-party tested supplements, providing an additional layer of assurance to consumers.

Buying Guidance

Given Six Star Muscle's trust score and lack of third-party testing, consumers should carefully evaluate their products before purchasing. Look for detailed Six Star Muscle reviews from multiple sources. Consider purchasing from retailers with strong return policies in case of dissatisfaction.

Frequently Asked Questions

Has Six Star Muscle had any recalls?

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

Are Six Star Muscle supplements third-party tested?

No — Six Star Muscle 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 Six Star Muscle safe?

Six Star Muscle 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 Six Star Muscle a good brand?

Six Star Muscle 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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