Grade: B+

LOW RISK

Gainz by Zimm

Item: Gainz by Zimm
Rating: 75
Author: SupplementChecker

Gainz by Zimm has a SupplementChecker trust score of 75/100, which is a Grade of B+ and indicates a LOW risk level. Gainz by Zimm claims to offer third-party tested supplements, but does not appear to have GMP certification. Consumers wondering "is Gainz by Zimm a good brand" should consider both the positive and negative factors outlined in our analysis.

Gainz by Zimm Trust Summary

Trust Score: 75/100 (Good)
Grade: B+
Risk Level: LOW
Third-Party Tested: Yes (self-reported)
FDA Recalls: 0
Adverse Events: 0

Gainz by Zimm has a trust score of 75/100 (Good). The brand is claims third-party testing (self-reported), has no FDA recalls on record and no adverse event reports.

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Red Flags

⚠No GMP certification visible

Verified Strengths

✓Claims third-party testing
✓Clean FDA record — no warnings, recalls, or significant adverse events

Certifications

Third-Party Tested

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 Gainz by Zimm Third-Party Tested?

Yes — Gainz by Zimm is Third-party tested. This means an independent laboratory has verified that the products' contents, purity, and potency match their label claims.

Is Gainz by Zimm a Good Brand?

Gainz by Zimm scores 75/100 (B+) — this is an average score. There may be room for improvement in testing transparency or certifications. Gainz by Zimm has a clean FDA record with no warnings or recalls. The brand holds third-party certifications (Third-party tested), which is a strong quality indicator.

About Gainz by Zimm

Gainz by Zimm is an independent supplement brand based in the US. The company's founding date is unknown. They offer a range of supplements in various categories. Gainz by Zimm aims to provide products for fitness enthusiasts.

Product Specialization

Gainz by Zimm focuses on protein and vitamins. Their product line includes various protein powders, such as whey protein and plant-based options. They also offer a range of vitamins and mineral supplements, catering to general health and fitness needs.

Testing & Certifications Explained

Gainz by Zimm claims to offer third-party tested supplements, but no specific certifications are visible. This means that while the company asserts its products undergo independent testing, SupplementChecker cannot verify the specific standards or rigor of these tests. Consumers should independently verify testing claims and look for recognized certification marks on product labels.

How Gainz by Zimm Compares

Compared to other brands in the protein and vitamin space, Gainz by Zimm's trust score of 75/100 places them in the mid-range. For example, Transparent Labs (trust score 92/100) provides fully transparent lab results and holds GMP certification. Optimum Nutrition (trust score 80/100) also has a higher trust score and is more transparent about manufacturing processes. Consumers should compare Gainz by Zimm's transparency practices and certifications against these competitors when making purchasing decisions.

Buying Guidance

Consumers should purchase Gainz by Zimm products directly from the official website or authorized retailers to ensure authenticity. Verify any third-party testing claims by looking for certification logos on the product label. Given the lack of GMP certification, consider starting with small quantities to assess individual tolerance.

Frequently Asked Questions

Has Gainz by Zimm had any recalls?

No — as of 2026, Gainz by Zimm has zero FDA product recalls on record. They maintain a clean FDA record with no warning letters or significant adverse event reports. Gainz by Zimm received a trust score of 75/100 from SupplementChecker.

Are Gainz by Zimm supplements third-party tested?

Yes — Gainz by Zimm supplements are third-party tested. They hold the following certifications: third-party tested (self-reported). Third-party testing means an independent lab has verified the product's contents, purity, and potency match the label claims.

Is Gainz by Zimm safe?

Gainz by Zimm received a trust score of 75/100 (grade: B+, risk level: LOW). This score is calculated from FDA records, third-party certifications, adverse event reports, and transparency practices. No FDA warnings or recalls are on record.

Grade A+ • Higher score

Want more comparisons? Browse our supplement categories or check our buying guides.

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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Quick Facts

Trust Score: 75/100
Grade: B+
Risk Level: LOW
Third-Party Tested: Yes
FDA Recalls: 0
Adverse Reports: 0

⚠ No GMP certification visible