Grade: C

MEDIUM RISK

Rule One Proteins

Item: Rule One Proteins
Rating: 58
Author: SupplementChecker

Rule One Proteins has a SupplementChecker.co trust score of 58/100, which is a Grade C, indicating a MEDIUM risk level. While Rule One Proteins is Informed Choice certified, meaning monthly batch testing for banned substances, it lacks broader third-party testing for ingredient accuracy and purity. This impacts the overall assessment of whether Rule One Proteins is a good brand.

Rule One Proteins Trust Summary

Trust Score: 58/100 (Fair)
Grade: C
Risk Level: MEDIUM
Third-Party Tested: Yes (Informed Choice)
FDA Recalls: 0
Adverse Events: 0

Rule One Proteins has a trust score of 58/100 (Fair). The brand is third-party tested by Informed Choice, 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

✓Informed Choice certified — monthly batch testing
✓Clean FDA record — no warnings, recalls, or significant adverse events

Certifications

Informed Choice

Third-party testing means an independent laboratory has verified this product's contents, purity, and potency match what's on the label.

FDA Record

FDA Warning Letters

Recalls

Adverse Reports

Clean record — no FDA warnings, recalls, or significant adverse events.

Is Rule One Proteins Third-Party Tested?

Yes — Rule One Proteins is Not third-party tested. This means an independent laboratory has verified that the products' contents, purity, and potency match their label claims.

Is Rule One Proteins a Good Brand?

Rule One Proteins scores 58/100 (C) — this is a below-average score. We recommend considering brands with third-party certifications like NSF or USP. Rule One Proteins has a clean FDA record with no warnings or recalls. The brand holds third-party certifications (Not third-party tested), which is a strong quality indicator.

About Rule One Proteins

Rule One Proteins is a supplements brand operating independently in the US. The founding date is unknown. They offer a range of products focused on sports nutrition and fitness enthusiasts.

Product Specialization

Rule One Proteins specializes in supplements, particularly protein powders, pre-workouts, and amino acids. They are known for their flavored protein isolates and blends designed to support muscle growth and recovery.

Testing & Certifications Explained

Rule One Proteins carries Informed Choice certification. This means that their products are regularly tested for banned substances by Informed Choice, a third-party testing organization. This certification reduces the risk of athletes inadvertently consuming banned substances. However, Informed Choice does not verify label accuracy or ingredient purity beyond banned substances.

How Rule One Proteins Compares

Compared to brands like Optimum Nutrition (trust score 72/100, NSF Certified for Sport) and Transparent Labs (trust score 88/100, third-party tested with published lab results), Rule One Proteins has a lower trust score. Myprotein (trust score 65/100, Informed Choice certified) is a closer comparison, sharing a similar certification for banned substance testing but lacking broader transparency.

Buying Guidance

Consumers interested in Rule One Proteins should prioritize purchasing products with the Informed Choice certification logo. While Rule One Proteins reviews are generally positive, carefully examine ingredient lists and consider whether the level of third-party testing meets your individual needs. There is no Rule One Proteins recall history to be concerned about.

Frequently Asked Questions

Has Rule One Proteins had any recalls?

No — as of 2026, Rule One Proteins has zero FDA product recalls on record. They maintain a clean FDA record with no warning letters or significant adverse event reports. Rule One Proteins received a trust score of 58/100 from SupplementChecker.

Are Rule One Proteins supplements third-party tested?

Yes — Rule One Proteins supplements are third-party tested. They hold the following certifications: Informed Choice. Third-party testing means an independent lab has verified the product's contents, purity, and potency match the label claims.

Is Rule One Proteins safe?

Rule One Proteins received a trust score of 58/100 (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 Rule One Proteins a good brand?

Rule One Proteins scores 58/100 (grade: C) — this is below average. We recommend looking for brands with third-party certifications like NSF or USP. They hold third-party certifications (Not third-party tested), which is a strong indicator of product quality. 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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