Grade: C

MEDIUM RISK

Zint

Item: Zint
Rating: 50
Author: SupplementChecker

Zint has a SupplementChecker trust score of 50/100, which is a Grade C, indicating a MEDIUM risk level. No third-party testing certifications were found for Zint products. Consumers wondering "is Zint a good brand" should consider the lack of independent verification alongside a clean FDA record.

Zint Trust Summary

Trust Score: 50/100 (Fair)
Grade: C
Risk Level: MEDIUM
Third-Party Tested: No
FDA Recalls: 0
Adverse Events: 2

Zint 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 2 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

Is Zint Third-Party Tested?

No — Zint 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 Zint a Good Brand?

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

About Zint

Zint is an independent brand offering supplements in the US. The founding date of Zint is unknown. They operate as an independent entity, not under a larger parent company.

Product Specialization

Zint specializes in herbal and protein supplements. They are known for offering a range of products in these categories, catering to consumers interested in natural health solutions and protein supplementation.

Testing & Certifications Explained

Zint does not appear to have any third-party certifications for its products. This means that no independent organization has verified the quality, purity, or potency of Zint's supplements. While not inherently negative, the absence of certifications means consumers must rely solely on the brand's claims and internal testing, if any. Consumers seeking "third-party tested supplements" may want to look for brands with certifications from organizations like USP, NSF, or Informed-Sport.

How Zint Compares

Compared to other brands in the herbal and protein supplement categories, Zint's trust score of 50/100 places it in the middle range. For example, NOW Foods, a well-known competitor, often achieves higher trust scores due to its extensive third-party testing and certifications. Similarly, Garden of Life frequently demonstrates greater transparency. Other brands like Vital Proteins also emphasize third-party testing. Consumers should compare "Zint reviews" against these competitors.

Buying Guidance

Given Zint's trust score and lack of third-party certifications, consumers should carefully research individual products before purchasing. Look for detailed ingredient lists and consider contacting Zint directly to inquire about their internal testing procedures. Purchases should be made from reputable retailers to ensure product authenticity.

Frequently Asked Questions

Has Zint had any recalls?

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

Are Zint supplements third-party tested?

No — Zint 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 Zint safe?

Zint 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 Zint a good brand?

Zint 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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