Grade: C

MEDIUM RISK

Windmill

Item: Windmill
Rating: 50
Author: SupplementChecker

Windmill has a Trust Score of 50/100, which is a Grade C and indicates a MEDIUM risk level. Windmill does not claim to offer third-party tested supplements, and no third-party certifications were found. Consumers should be aware of this when evaluating the brand.

Windmill Trust Summary

Trust Score: 50/100 (Fair)
Grade: C
Risk Level: MEDIUM
Third-Party Tested: No
FDA Recalls: 0
Adverse Events: 1

Windmill 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 1 adverse event report.

Where to Buy Windmill

Purchase from trusted retailers. We may earn a commission at no extra cost to you.

Buy on iHerb Buy on Amazon

Check another brand:

e.g. Nature Made, Thorne, NOW Foods...

Check

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 Windmill Third-Party Tested?

No — Windmill 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 Windmill a Good Brand?

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

About Windmill

Windmill is a US-based supplement brand operating as an independent company. The founding date of Windmill is unknown. They offer a range of supplements across various categories.

Product Specialization

Windmill offers products in several categories including vitamins, minerals, herbal supplements, fish oil, and protein. They offer a wide variety of vitamins and supplements.

Testing & Certifications Explained

Windmill does not have any third-party certifications on record, and it does not claim that its products are third-party tested. This means that no independent organization has verified the quality, purity, or potency of Windmill's supplements. Consumers should be aware that the absence of third-party testing increases the risk of inaccurate labeling or contamination.

How Windmill Compares

Compared to brands like Nature Made (Trust Score 75/100) and NOW Foods (Trust Score 82/100), Windmill's Trust Score is significantly lower. Nature Made and NOW Foods both have certifications from organizations like USP and Informed-Sport, indicating a higher level of independent verification. Other brands like Kirkland Signature (Costco) also offer third-party tested supplements.

Buying Guidance

Given Windmill's Trust Score and lack of third-party certifications, consumers should exercise caution when purchasing their products. Look for specific information on the product label regarding ingredient sourcing and manufacturing practices. Consider purchasing from retailers with strong return policies.

Frequently Asked Questions

Has Windmill had any recalls?

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

Are Windmill supplements third-party tested?

No — Windmill 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 Windmill safe?

Windmill 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 Windmill a good brand?

Windmill 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.

Get FDA Recall Alerts

We'll notify you when FDA recalls affect supplement brands you care about.

Compare Similar Brands

Brands in similar categories with comparable trust profiles. Compare certifications, scores, and safety records.

65/100

Lower rated

Brightside

Grade B • Higher score

65/100

Lower rated

Outwork Nutrition

Grade B • Higher score

65/100

Lower rated

Vital Vitamins

Grade B • Higher score

65/100

Lower rated

Thesis

Grade B • Higher score

65/100

Lower rated

Traditional Medicinals

Grade B • 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.

Promote Your Trust Score

Embed this badge on your site — it displays Windmill's verified trust score and links back to this profile page. Helps show buyers you're transparent about third-party testing.

Small · 220×110

<iframe src="https://supplementchecker.co/embed/windmill/" width="220" height="110" frameborder="0" loading="lazy" title="Windmill trust score by SupplementChecker"></iframe>

Medium · 320×160

<iframe src="https://supplementchecker.co/embed/windmill/" width="320" height="160" frameborder="0" loading="lazy" title="Windmill trust score by SupplementChecker"></iframe>

Large · 420×210

<iframe src="https://supplementchecker.co/embed/windmill/" width="420" height="210" frameborder="0" loading="lazy" title="Windmill trust score by SupplementChecker"></iframe>

Paste the snippet anywhere on your site. The badge updates automatically when Windmill's trust score changes.

Own this brand? Contact us to update your information.

Want to find supplements you can trust?

Third-party testing is the single best indicator of supplement quality. We analyzed Windmill and 500+ other brands to find the ones that actually prove what's on the label.

See the best third-party tested supplements →